[Dongster]

Allthough it happened very recently it will be in my top 3 "most arousing memories" forever I think.

A few weeks ago we went to a nude beach together with friends of us. Lets call them Jim and Anna. We'll go to nudes beaches together for years now. In fact, a nude beach is where we've met each other. There was never anythig erotic between us. Just relaxing together in our birthday suite.

We were setting near the dunes, some 40-50 yards from the sea. A bit away from the crowd.
After a while my wife and Jim decided to go for a long beach walk as they do that often. So that left me with Anna for at least one and a half hour.
After some half hour of chitchatting, reading and chitchatting again she needed something from one of her bags.
She kneeled before them and searched her bags with her ass and shaved pussy towards me. And somehow that view, which (at least in my sensory experience) took some time, got me hard.
Now, Anna is at 53 certainly not unattractive - But she's quite average, a bit on the plump side perhaps, but quite fit. And I'd seen her nude dozens of times. I've put sunscreen on her on several occasions and that never got me hard. But that view did it...
As soon as she was done rummaging her bags she looked at me and saw my hard-on. A twinkling in her eyes appeared and she asked me if I had enjoyed the view.
It was a bit difficult to state otherwise, so slightly embarrased I could only agree.
She said "Oh cool. I've still has it in me then I guess" and laid herself down again taking occasional glances at my cock. And just as my erection began to subside she asked "Shall I put some sun screen on your back? You're starting to get red"...

My first thought was "Oh my…" but I also felt my shoulders getting warm. So I laid on my stomach ans she started to rub the sun screen on my back. Then on my butt, for which she took some time massaging it in and then my legs. There she paid extra attention on my upper thighs, sometimes touching my balls. Needless to say I got hard again.
When she was done she told me to put sun screen on her back. And of course I couldn't say no. But I was still somewhat anxious with my hard on.
She looked at my erection, smiled and laid herself on her stomach. A little tense I started rubbing the sunscreen onto her back. that was going well. Rubbing it onto her butt went pretty well also. Although she did "complain" that I wasn't putting it on thoroughly enough. But when I needed to rub her legs, she spreaded them and I looked straigth at her slit again. She had spread them quite some more then needed, so she was obviously teasing me. So I thought "what the heck..." and started massaging her legs, always looking straight at her pussy. I started below and worked my way up towards her butt. Not massaging, but thouroughly rubbing sunscreen in. When I reached her thigh she lifted her butt slightly giving me an even better view.
I also took some extra care with her thighs. I also touched her pussy lips very lightly occasionally and rubbed a little sunscreen into her ass crack which caused her to stir in surprise.

Needless to say I was hard as a rock when I was done. We laid ourself down again. Anna on her back and I on my stomach because I didn't want any passerby's to notice my erection
However, I find laying on an erection quite uncomfortable so I soon swiched to my side facing Anna. Seeing I was still hard she teased me with overly massaging sunscreen on her tits, spreading her legs and quite seductivly rubbing the sunscreen onto her belly and pussy. And most of the time blatantly staring and smiling at my hard cock.

After some 15 minutes Anna suggested that we should swim. But my cock was still hard and I told Anna that I sure wasn't going to "parade" all over the beach with it. She looked at my cock and asked me why it was still hard because apparently with Jim his erection subsides quite fast.
I told her that our sunscreen rubbing as well as her teasing had caused it. And that while my erection may subside I was already so aroused that it stick his head in the air at the slightest occasion.
Anna looked at me, looked around, laid herself beside me and put her hand on my cock. She said she was sorry she got me so aroused and started to give me a handjob. I was very surprised but said nothing and after a few moments I started caressing her tits and nipples and got my hand down to rub her pussy.
But she pushed my hand away quickly, looked me in the eye and told me that her vagina was off limits. I only nodded and continued stroking her tits and upper body while she jerked me off.
Laying on your side isn't the best way to either get or give a handjob, but the whole setting was so arousing that it didn't take me long before I felt my balls boiling.
I warned Anna that I was about to cum and she turned slightly to her back and aimed my cock at her belly. So she could see me cumming. I shot a very large load on her belly like I hadn't had sex in 4 months or so.
She milked my cock till every drop had come out.
Some of my cum had dripped down on the left side of her body, But when she sat up (knees up and legs spread) up I saw my cum dripping down her belly straight onto, and perhaps into, her pussy lips.
She laughed excitingly about it and told me she never had seen Jim cum that much. Then she started to wipe it all off her pussy.

Well, eventually my erecton subsided enough to go swimming. When we got back we agreed we wouldn't tell our SO's about it, and we talked some about my bucket load of cum and it turned out that Anna never had touched another cock before, let alone making another cock cum. Anna and Jim where highschool sweethearts, which for me made it a bit more special. Luckily neither one of us was feeling awkward or guilty. In fact we both found it exciting.
When our SO's came back we acted like nothing had happened and after dinner in a beach restaurant we said our goodbyes and went home

A couple of days later we exchanged some texts where again we confirm that it a fun and that neither one of us had any regrets.
I do wonder what will happen if we go to the nude beach again. Probably nothing and that is totally fine.
But that view of Anna's pussy covered in my cum is a sight I will never forget and probably make hard for years to come/cum.

edit: some typos (probably not all)