Storeroom in a County Hall, in a (private) hospital ward when the then GF was visiting me. Late night in the stand of my local football club that was hosting an end of season function. Few risky, kind of, like a park, uni common room, car. Most risky and so unique was when a teenager in my room when my folks were still in, one off as it wasnt worth the stress of it!!

I know a young guy that told me three or four jocks had sex with this young teacher in the equipment room by the gym. They were 18 and maybe she was 22. He said they didn't do it all at the same time, they were just different guys she banged. They never got caught and apparently she moved on from younger guys and got married. Back in the day she probably would have been fired, but not had to go to court like they do today although from what I understand all the guys were legal age. I didn't know her well, but she was pretty cute and the guy told me this went on for a few months with like 4 different guys.

If I could give you two thanks I would because when you're supposed to be working your having fun is be the best

Same here except it was a supervisor and we was in the storeroom behind some equipment. Something must be in the sauce

Community shower
 

Before we were married, my wife and I used to have sex in the community showers of the men's barracks where I lived. There were stalls with ill-fitted curtains, but it was more private than my room.

On the hose bed of a fire truck

In the back of a military truck on top of some cam nets. Or in a hedge. I don’t know why she wanted to get fucked in a hedge but I wasnt going to say no.

IIRC there were two other people that reported the same thing earlier in this thread. That makes four of us which either means it is fairly common or a high concentration of kinky firefighters are on OCC.

ON THE LAKE
 

My fantasies have often included pools, lakes skinny-dipping and boats. Sadly though, reality has always been a little less intense than fantasy, perhaps because outdoor sex gives you more things to worry about. The image of sparkling clear pool water is very titillating, but it has always been that little bit too cold. And cold water shrinks more than your ambitions. Boats have always been a turn on for me, but harsh reality says that a boat cabin is just a cramped version of your own bedroom.

But once, just once, I managed to get most of the fantasy jigsaw in place. Dorothy and I were on a Hobie Cat on a warm tropical lake. The air was kind and the winds were light. A sailboat is a magical thing, because if you get it sailing on a fixed course with the sails cleated, the sailboat is a machine with no moving parts, yet the whole thing is moving across the water. When we got far enough from land to feel private, we stripped off and sailed nude for a while. She was young and beautiful and I was young and horny, so we started making out and eventually I asked for more.

The trampoline of a Hobie cat is like a big, wide camp bed. The sails were cleated in, so all I had to do was steer the boat. Dorothy lay back on the woven trampoline. I climbed on like an eager missionary, gripped the tiller extension between two toes on my left foot and managed to stabilise it on a fixed course. I was super eager, so penetration was easy and we continued like that for a few minutes with my butt rising and falling to the rhythm of the waves. My erection would fade if I took my mind off the job, so I got very focussed and super intense. When I'm like that, I have a wonderful time, but I can't last.

It wasn't Dorothy's fantasy. Her butt was against the un-cushioned trampoline and she was supporting a bouncing man whose mind was on matters of navigation. Very erotic for me, but not much cop for her. Dorothy's idea of a good time included privacy, a comfortable bed a gentle pre-amble and an attentive, caring lover. I tried to be like that when we returned to the Hotel later that day. I think I succeeded and there was some vocal evidence to support my opinion.

In a Row Boat on the shore!
 

I went with a few buddy's to visit a few of our girlfriends, that had rented a Cabin on a lake for a week and we ended up staying for the night!
At night we all found places to sleep all over the place, but next to our girlfriend. At sometime going into the night my girlfriend woke me up and said she was getting Hot, but I can't remember if we both were in a large sleeping bag or under a blanket? She asked me if I would walk outside with her and I did, going to a row boat they had laying on the sandy shore line! We sat in the boat and in a few minutes started making out!
The next thing that I knew, under the Moon light and in that Boat we had some great SEX!
After rocking that boat on shore, we went back inside and it appeared that everybody else was still sleeping and didn't view Us!
We all got Up in the morning, but nothing was said so I guess it worked out well and we had more Fun with the girls till us guys went home!

:D

Little cave at Red Rocks in Colorado, gf, late in afternoon, fingered her to organize, got bj

Went for a jog with another gf on Galveston Island, cooled iff in water, I had my arm through both her swimsuit bottoms and my running shorts

With gf, at bottom of trail that goes down to river, doggy style with her hands on Boulder

Finger fucked a lot of ladies driving down the road

Met lady traveling on business, things developed rapidly, fucked her up against wall of elevator while going up to her room to fuck.

Met lady at club, danced with her a lot, with club still busy fucked her from behind while "dancing", never got her name

Girl with enormous sex drive and reputation, in college, brought her virginal friend up to my room, to give her friend "instructions". Did oral on each other, then fucked, virginal friend started rubbing herself, later took virginity of that girl while the first one watched

At university, tower stacks held graduate library, had numerous girls while looking out over campus

Train sex
 

This might be kind of a weird place but one of the best places I had sex is in long distance trains. I dated a married Indian woman for few years. She was 26 when we started dating and she was living away from her partner. Couple of times a month when she goes to visit her husband, we book tickets together in a private coupé in the night train. It was a good feeling to fuck in a confined space. After the ticket checker verified our tickets, we would lock the coupé and she always loved to start with a blowjob mostly ending up with her swallowing. We had lot of time with nothing much to do, so we would end up having sex 4-5 times in the whole journey.

Lecture theatre or a mountain top
 

Probably for me either a university lecture theatre - I was a postdoctoral researcher so had a key for the building and this was an old lecture room with banked seats going up a couple of levels. I was dating an undergraduate student and we got it on in the lecture theatre, got her completely naked on the lecturers’ bench at the front, ate her out for a bit until she was really moaning and then we fucked!

Or secondly would be a few years later hiking with a friend, too if a mountain, very quiet and the girl said “wouldn’t it be cool to have sex on a mountain top in the fresh air”. We hadn’t done it before then but we’d flirted a bit…so it was certainly an invitation to enjoy the location!!

Hanging on to a small boat
 

A few years ago my wife and I spent our hliday on an island in the mediteranean sea. We decided to rent a small boat for one day and enjoy the freedom of driving around the coast.

Once we left the harbour we both undressed and stayed nude for the rest of the day. There were a lot of other boats near the coast on that day. I would estimate that 50% of the woman on the other boats were topless, a few were nude. But my young wife still got a lot of attention when someone was passing us.

We set anchor between two beaches next to the cliffs to have some privacy. There were boats passing a 100-200 meters away. My wife was sitting on the small bench and I went down on her, she was already super horny and came quickly. Then we switched positions, I sat down with her between my knees and she sucked my dick. Before she could finish her job another small boat arrived and she stopped, I believe they didn't notice what we were doing.

On the boat were two young couples, both girls were topless. They sat anchor 10 meters next to us and opened some drinks.
We were still super horny and wanted to fuck, but were to lazy to raise the anchor again and look for another spot. So my wife suggested to jump in the water and fuck there.
We jumped in and swam to the side of the boat facing away from the others so they wouldn't see us. I held onto the latter on the side of the boat with my wife between me and the boat and started fucking her.
At first we were worried that we would shake the boat too much but with the waves we guessed that it wouldn't be visible. The sex was wonderful, I fucked my wife harder and we were completely focused on ourselfes. That way we didn't notice that the wind had changed and turned our boat slightly.
Suddenly the other boat came into view. My wife had her eyes closed and by the way she moaned I could tell she was close to orgasm. I just wanted her to come really hard so I fucked her extra hard which made a lot of splashing sounds. She finally came with a loud moan - I also came and shot my load into her pussy.
After catching our breath we realised the boat had turned so far that the two couples had the perfect view on us and they did indeed watch us fuck. When we looked up to them they cheered :D My wife was mortified :p
But she later said that I did the right thing to continue fucking her :)

Fucking in the sea can be difficult. Sea water is not a good lubricant. My wife and I were on an evening cruise with a bunch of friends. We were all swimming in front of the boat and we started fucking. Our friends could not believe that we had managed it, and dove down to verify that my dick was in her.

DR

Cliffside to Roadhead
 

My wife and I were hiking a steep canyon trail along a nearly dry creek in the Mojave Desert. The footing was loose scree and decidedly treacherous; we had to be very careful. She clung to my hand as much as possible. We reached a wide spot of the trail and looked down into the canyon. We weren't up all that high- no more than 75-80 feet above the creek but it was nearly straight down. We took a breather and then eventually the fresh air got to us and we started making out a bit.

I undid her jeans and reached into her panties - she was already quite wet. I continued kissing her while I stroked her pussy and pressed on her sensitive nub. She pulled her tit out of her top and presented her nipple for my licking and sucking. In a few minutes she shuddered and moaned and came on my fingers.

My cock was quite hard and she did the same as I had - reached into my shorts and found my cock. She was squatting on the edge of the path while holding on tightly to my legs. She played a little bit but then looked up at me with fear showing on her face. She kept playing but also kept looking about and checking her footing.

So, I stopped her and said we should retrace our steps and hit the road to get home. She looked fairly relieved and we carefully went back the way we had come in.

Once back at my truck she kissed me with some passion and said, "Thanks for that - I was really scared". I said that it was no problem and we got going. Once on the road (out in the middle of the desert with little to no traffic) we had only gone a little ways before she reached over and undid my pants while I continued to drive. Once she had "Little Sly" freed she leaned over and took my cock into her mouth and began a soft, leisurely sucking. This continued for several miles and I loved every moment. She finally came up for air and saw that we were getting much closer to town and our home.

I feared that this would be the end of our fun. I was wrong - now knowing that time was running out she literally attacked my cock and kept it up until I felt my cum rising and ready to blow. I tugged at her hair and said "I'm going to cum if you don't stop". She turned her head just enough to smile up at me, and to run her tongue all around my glans. She dove back into pumping me with her mouth and in moments I was growling and cumming.

Due to a bad experience in the past (she was gang-r***d by classmates while in high school, long before I knew her), she did not like my cumming into her mouth (swallowing, of course, was off the table). In practice, she would pull away just enough that I wasn't shooting directly into her mouth, but would still keep her tongue moving around on me as I started spurting, with it usually landing in my pubes, unless she directed my shots across her tits or belly.

Whew! Once I finished (by this time I was not in full control and had let off the throttle enough that we were almost at a standstill in the middle of the road), she sat up and wiped her mouth while I continued to slump in the seat with my pants wide open and my shrinking cock in the breeze. I stayed that way all the way home until we were in our driveway. It took me that long to catch my breath and for my heart to settle down. I daubed at my pubes with a tissue, but she said, "Oh, you shouldn't find much - I swallowed most of it." WOW! I loved her even more right then!

We never repeated that experience - I think it was enough for both of to be able to check that off the bucket list.

On a down note, about six months later a co-worker went hiking on that same trail. A quick misstep and he fell to the bottom of the canyon and was killed. :(

College Library
 

My girlfriend (now wife) had gone to the college library late one night. They had one copy machine down near the stairwell in the basement. Hardly anyone used that machine -- especially late at night just before the library closed at 10 p.m. We went down to that machine to copy some info for research papers we needed to write. It was about 9:45 p.m., and no one else was down in that basement. We started talking about how it might be fun to get upon the copy glass with nothing on our bottoms and let my girlfriend sit on my lap while we plugged in a few dimes. We pulled off our pants and underwear, and I sat down on the copier glass. She climbed up on me while facing me. Initially, we just got a picture of our privates mashed against the copier glass. But the enticement was just too great. I rammed my dick into her pussy while she straddled me. I dropped in a few more coins and that bright green light scanned our delight. Eventually, I started pounding her back and forth. Just then, the door opened from the floor above, and a woman's voice said, "Library closing in 5 minutes. Get your things together." We quickly threw on our clothes, grabbed our copies and headed out laughing. I have to admit, we were scared shitless that that woman was coming down those stairs to see us doing the big dirty.

Definitely! If we plan on fucking in the water, e.g. when we visit a spa where we like to fuck in the late evening in the outdoor pools, we always take silicon based lubricant with us. It's a game changer!
But for the boat trip a really horny wife with a wet pussy and some patience was enough to get my dick into her ;)

Part time job
 

When I was a college student I was lucky enough to get a part-time job a a rec center, it paid little more than minimum wage, but it was a nice gig. I was to man the place from 4:00 to 9:00 5 days a week, wipe down the gym equipment, rack the pool table, this took about a half hour, then the rest of the time the place was empty, so I could use it for paid study time. If someone did show up, which actually happened occasionally, they set of a chime on the door downstairs.

One day I showed up for work just as the two girls were leaving from a workout, I knew one of them, Della, fairly well, I shared classes with her and we had been on projects together. He father was a prominent surgeon in town, she lived a few blocks away, I had been to her house for a party once.We chatted for a few minutes, she wondered why I was there and I explained my job to her, she said maybe she'd drop my to keep me company sometimes. Since exams were almost over the job was even more boring, I told her that would be great.

Sure enough, a few hours later, I heard the chime ring downstairs, steps on the stairs and Della comes in. She still has workout clothes under a sweater, I presume she is there to work out. I'm sitting at a desk and Della leans and gives me a kiss, of course I respond, next thing is she is sitting in my lap and our hands are going everywhere.

Della tells me a surprise, she said she's been coming here since she was a kid and one of her earliest fantasies was working out nude under the watchful eye of a trainer. I tell her that I can help her with that, she starts to remove her sweater, I tell her to stop, that's her trainers job. I peel off her sweater, then the top of her leotard, her boobs are gorgeous, she covered up her nipple until I reached up to remove her hands. Then her leggings can down revealing a thin light broth bush. We kissed and caressed, she tried to stroke me, I let her, then said "only if you do your exercises well."

I played around with a few machines, I got undressed as she exercised, then I put her on the machine that she has to force open with her thighs, that open pussy with clit dangling wsd too much, I get between her legs and licked her clit.

I was glad she had condoms, I had not though for a second that I was going to get laid at work. We had a few more adventures until the rec hired reak instructors for the summer and Della went to Europe with her family.

Nothing "creative" for me; just the "usual" sex on the beach.

It was Orient Beach in the middle of the night. No one around to see us.
My wife and I had been drinking all evening and were making out in our room. It was actually her idea to go for a walk on the beach...bottomless. So I just put on a T-shirt and she put on a short dress.
We start wading and running in the ocean. She pulls her dress up over her ass. We start out by holding hands; and then she switches to holding my cock. So we're now wading cock-in-hand. When I'm good and hard, she jumps in front of me and bends over, still holding my cock and directing it inside her...it was fun!

Pool noodles
 

Playing in the waves naked just off shore we were just beyond the wave break. My gf wrapped her legs around my waist letting my cock slip inside her. We both leaned back away from each other with a pool noodle each to stay afloat and the waves rocked us in and out. The nude beach was packed and most people I am sure knew what we were doing but we were half submerged at the waist with her big tits bobbing on the surface.

It worked well and was quite comfortable we stayed that way for a while just floating along joined at the dick.

Only once
 

Had sex with my wife at a bar.. we were standing at the horseshoe at a crowded bar. It was a little tricky, but I actually came in her 😆

Archery Range
 

At an event at a campground where an archery range was set up away from the main camp, in a clearing with trees and bushes surrounding it. My fwb and I were checking out the setup before the official start of shooting and we realized that we were alone. We laid down in the grass near the shooting line and made out for a bit. I brought her off with my fingers, then she gave me one of the best blowjobs I’ve ever had, even swallowing my load. We straightened our clothes up and went back to camp for our archery gear for the tournament, about a half-hour later. We both shot well, but neither of us won the tournament.

Wedding
 

During the wedding of an acquaintance, my wife and I snuck into a side room of the church. She lifted her skirt and pushed her underwear to the side. I unzipped to let my cock loose, then knelt on the floor and she straddled me, sliding my cock onto her already dripping pussy. A few thrusts later and we came, quickly dressed and went back to the festivities. I could smell her pussy on me and she had cum dripping out of her.

Next to the railway line I use to go to work - wife used to used it too but no has moved jobs. She must have gone past and looked out at that spot many many times where my bare arse was surly going up and down banging the fuck out my girlfriend, I'm almost certain I'd pulled her top up to expose her tits too. This was a few years before I met my wife. I'm positive the commuters that day got a good eyeful of a 20 year old blonde getting it hard.

We regularly visit our local nudist club, where they have a small indoor sauna.
It was open during the winter on Friday and Sunday evenings. This sauna is accessible through the small club bar.
Anyway one Friday evening we went there, got undressed in the bar and went into the small sauna. We were alone, after a while no one else came in. I was sat next to my wife in the sauna, and reached down and put my hand between her legs, and started to finger her. She was anxious that someone would walk in on us, but I continued. Well once I'd got her lubricated and turned on, there was only one thing to do.
I bent her over and put my cock in her. I knew I wouldn't last long. Sure enough I felt I was about to come, so I pulled out. I managed to stem all the come in my foreskin, and proceeded to dump the lot over the hot coals - it soon sizzled and evaporated.

Backseat of a trailblazer, we were at a wedding and had been drinking before the reception. I pulled up to the parking spot and my wife asked me to park away from all the other cars to avoid door dings. She then slips out of her panties, pulls up her skirt and climbs in the back seat. She took out my cock and climbed on. She had to go to the restroom 2-3 times to prevent my cum from running down her leg

No door dings and ya managed to ring her bell… !
Win/win in my books

Movie
 

I have finger banged my wife in a movie theater, she had a sweatshirt laying over her lap. So i unbuckled her shorts and slowly started rubbing her pussy. She tried stopping it but I forced my hand into her panties and wouldn’t stop. She slowly gave in until she had cum on my fingers.Her pussy was soaked and we enjoyed the remainder of the movie lol

Only a couple places come to mind that might be interesting. All were around 3am give or take & were over 25yrs ago

- Front seat of a car (bench seats) in the parking lot of a bar directly across the street from the Space Needle

- On the scorer's perch at a baseball diamond in a very well-to-do neighborhood notorious for their 5 cops that took their jobs VERY seriously

- Top of a jungle gym at a local park

Boring, I know

My Mrs. Robinson...
Charity fund raiser - mens room
Golfing, started raining, drove into the woods while waiting for the rain to end

Different woman .. now wife
Bowling alley parking lot
her parent house on the living room floor while kids and parents were in the basement watching tv
Public swimming pool

Sauna
Local woods in daytime.
Outside on an adriatic island at night, over looking the island below.
Up against a car park wall.

Spanish beach at night. Sand gets everywhere, regardless of ho careful you are with a towel to lie on, and it's like sandpapering your own cock and her minge simultaneously. Not recommended.

Spanish 'mountain top' (different woman) Climbed a hill before dawn, to beat the heat, only to fuck up against a trig point. Sex was OK, but the sun had come up by this point, we were wreathed in sweat already from the climb and it was like trying to hold onto an eel (for her and me). Not recommended.

My gf once told me that she and her best friend talked about their fantasies. During their discussion, both agreed to the fact that they don’t want to get r#ped in real life and I fully agree to that. Nevertheless both women were aroused by the idea.
One day in summer, there was a party at the company of my gf, no +1s allowed. The company wasn’t too far away and she decided to wear a dress and went by bike (to the party. She surely had a few drinks and texted me before she got home. We both share are positions on our smartphones and that way it was easy to track her. At the given time we lived in an apartment building with a bicycle storage room in the basement that was only accessible from the outside. Just before she arrived, I hid in one of the nearby bushes. She parked her bike, went down the steps to unlock the door, picked up her bike and went to the basement. I sneaked downstairs grabbed her from behind (made sure she could see my face, though), tied her hands and fixed her at a bike rack. I removed her underwear and she was already soaking wet. I fucked her in that public room and she came pretty fast. I untied her and we continued fucking in the elevator. She really enjoyed it and I was happy bringing her imagination to live.

My wife and I have been together for many years and have had sex in a few random places that were a lot of fun.

When we were in high school she worked at a golf course. We fucked all around the clubhouse and after she closed up we put down a blanket and had sex on the 18th green.

We’ve gone hiking and had sex at the top of a mountain trail and behind a waterfall.

We both went to a large SEC college and found a way to sneak into the football stadium and had sex overlooking the field.

We once fucked in front of a window overlooking a busy street in New Orleans which was sexy as hell.

Some riskier sex involved fucking in the pool at her parents house while they were home.

My wife and I were having a swapping situation with another couple.

The other woman was insatiable sexually, which made life interesting as she would pretty much do anything to whet her appetite.

We were attending a formal evening in a country environment. I went down a lane with her.

We found a convenient tree to lean against. She unzipped my pants and buried my penis in her mouth. No problem with swallowing the lot.

Then she slipped up her dress (stockings and no panties) and I entered her moist pussy.

It wasn't long before I came inside her. My dick went back in her mouth and she cleaned me up.

She was a stunner.

Various
 

-Standing up in the alcove at the door of my high school.

-In the dunes on the shores of Lake Superior. My girlfriend on top to avoid sand.

-Beach on Block Island

-Beach on Cape Cod under a sarong. Park ranger saw us with binoculars and came over to lecture.

-A cave on the banks of the Mississippi. Could see the car traffic below.

-Hotel room with my brother sleeping in the nearby bed.

Many years ago with my ex-wife, being only in our early twenties. She was a very sexy and shapely and very cute woman. She wanted to go to a party that her friends were attending. So we went.I'm not sure what kind of party it was but a friend convinced us to strip naked, put on masks and have full blown sex on a stage that was surrounded by other party goers. The stage was up high enough everyone could see, bright lights and other could get good looks as I slid in and out of her. She came so hard.

When we finished and stood up, everyone applauded as we walked away to get dressed.

I really don't think anyone guessed it was us.

Another time we went tent camping and she stripped and sat on top of me in the tent and rode me hard getting quite loud. I know the other two couples we went with got an eye full. She loved being watched as she sat on my lap and bounced up and down on me.

Hard to pick
 

I’ve done the golf course greens avatar hours river sides lake side in the wood on a small bridge. In the creek in the public pool shower room. In a car in a car storage room at work in a previous office building. Already have a spot scoped for years in the current building but I am far too old now to hit on hot women at the office. But know where if the stars ever aligned.

In a fountain although got naked together but didn’t truly penetrate
(Water was F#€kin cold)
Many others if I thought hard enough

Getting back to the insatiable swinging wife story.

I had to go back to her house to pick up some stuff.

Of course, she volunteered to go with me.

We went into the house, and she sat down on the couch with her legs wide open.

I sat over her and she devoured my cock. I reached down to feel her pussy while I sank my cock fully in in her mouth/throat.

Needless to say, I came in her mouth.

She was ready to feel her pussy and arse. Wet to the maximum, I put fingers in both holes. Then I licked her to orgasm. Best fuck I have ever had!

Back to the party.