We had invited a friend for the evening, it started with the "ti punches" my wife drank three, she was completely gone especially that then she continued with wine.
Towards the end of the meal, she staggered to the bathroom.
Not seeing her come back, I went to see, she was slumped on the seat, she slept, the skirt pulled up and the panties on her ankles.
I called our friend to help me take him to bed; he asked me to open the doors for him, he took off her panties completely and put them in his pocket then he lifted my wife and as soon as he had enough room, he tipped her over his shoulder;
I had gone upstairs to open the doors and when I saw her arrive, I regretted not having a camera because her buttocks were exposed and the mussel was offered. He tipped it over on the bed,
I held her while he took off the bodice and bra freeing the 90C breasts he had never seen. He then removed her skirt,
She only had her black stockings and a garter belt, he kissed her before taking everything off her and that's how we put her to bed.The next day, she didn't remember anything, he kept the little panties as a souvenir....

Not counting nude beaches and childbirth, the first time would have been when we got very drunk with another couple, who she’d known with since long before she met me.

The lady was and still is one of her closest friends. They streaked together in front of the lady’s husband and me. They’ve have been aged about forty at the time.

Then not convinced we’d paid enough attention to her naked run, my wife raised an arm up in the air and did full twirl in the nude to make absolutely sure we got a good look.

Recently when I talked about her naked cavorting with our friends, she claimed to have no memory of it. I know that I’m not deluded because our friends occasionally mention that evening.

weird
 

You do realise this is a sexual assault?

Nude spa on ski holiday. We didn't know it was nude until we got there but decided to brave it out.
Changing rooms were segregated and she came out with towel on.
We had arrived early so found an empty steam room where we could acclimatise undisturbed.
But as we were coming out, at the exact moment, two old blokes came round the corner.
Their line of slight was straight at my wife coming out of the door.
She quickly reached for her towel on the nearby hook but the guys didn't waste any of their time and took everything in.
After that it got busier and so she was seen by many more men.

On a similar note.
When I brought my ex-wife to a nudist resort for the first time, she was pretty adamant about not wanting to be seen completely naked. So we stayed far away from other people and hiked on the trail.
On the way back we walked by the clubhouse, and saw there was a hot-tub inside. No one else was in there, so I convinced my wife to hang up her towel and take a dip with me. We'd been soaking for a while when we decided to exit. I don't know where he came from or when he entered, but there was suddenly a guy standing right in front of me. He'd recognized me as an old college classmate. My wife had already stepped out of the hot-tub; and our towels were hanging out of reach behind the hot-tub. She immediately stepped behind me, using me as a shield from the guy's view.
As we started talking, it didn't take long for my wife to realize the guy was gay. I guess she figured he wasn't going to look at her sexually, so she stepped from behind me and stood besides me in "full naked glory" in front of him. He did take a good look at her pussy though, so I guess even gay guys can get curious female genitals lol!

So that was the first guy to see my wife completely naked in my presence. For my wife, the experience actually freed her from her anxiety about being seen naked. She just threw her towel over her shoulder and decided to just stay naked.

Some random guy at the beach.

First time for me was after about five years of hot pillow talk when I talked my wife into trying sharing her. It did take her quite a while to warm up to the idea, but eventually she began liking the thought of it. Of course, at first you don't know what you're doing so a lot of false starts and fumbling around happened early on as we were trying to find and meet a good guy.

We eventually met a likely candidate, and after a couple of non-sexual meetups, one warm fall afternoon the three of us went to a local cheap motel. I went into the office and rented the room. Meanwhile my wife and the guy started making out in car. When I got back he had his hand up her skirt and they had their tongues down each other's throats.

I gave them the room key and they took off, and I parked the car. I intentionally sort of dawdled around for a few minutes so they could get started without another guy eyeballing them, even though it was me. They'd flipped the security lock into the door crack so I could get in without their help, and when I stepped in they were still mostly dressed, standing in the middle of the floor, deep kissing. Wife's 40D tits were out, and he had her skirt hiked up with both hands firmly planted on her bare ass. For her part, she'd already dug his cock out and was slowly stroking it while they stood there kissing.

Five minutes later they were both naked in bed. Ten minutes after that I watched him slowly push his hard cock into her waiting, wet pussy. His was the first of many, but that first time was just hot as hell. First guy to see her naked after she was my wife, and fuck her too. Still makes me hard thinking about it.

Among friends
 

My wife, whilst still my girlfriend, and I were on a friend's boat with 3 other couples. As soon as the couple we didn't know well went down into the cabin, leaving the rest of us on the deck, my girlfriend for no reason at all stripped off to enjoy the sun. We knew the 2 remaining couples fairly well and she'd even previously been intimate with one of the husbands, but the other guy was now seeing her naked for the first time. Both the wives had seen her nude before, so no big deal there. So, my girlfriend was the only one naked, and remained so for over two hours, just carrying on as though she were clothed, chatting and eating with us, until the couple from below returned, then she covered up. So, indeed they saw her naked also, but only as she got back into her bikini.

This was the first time other men saw her naked with me present, and her being casually naked among friends who kept their clothes on just intensified the thrill.

The classic pop-ups
 

My friends saw her naked, well, at least topless, in a classic situation.

She and her girlfriend were sunbathing around the pool with their bikini tops undone. A friend was making it known to everyone around that he was going to the ice chest, grab two handfuls of ice, comically walk behind the girls, and dump the ice on their backs.

Yes, it was like in the movie MASH. Everyone around the pool was sitting back, waiting for it to happen. I went along with the prank and didn't say anything.

The ice went down, and both girls popped up, giving everyone a good show before dropping back down to put on their tops back on.

Of course, she was embarrassed and kind of mad that I didn't do anything. I couldn't beat up our friend because of a prank. Anyway, she had the nicer pair to show off, and everyone got to see the nicer pair I had to play with.

Wife's gyno
 

The first person to see my wife naked in my presence would be her gynaecologist. I've posted about that previously on other threads. I've occasionally inquired whether she remembered feeling an attraction to him during these visits, which she adamantly denied.

Recently, in a moment of unflappable honesty, she confessed to loving it as he habitually looked into her eyes during the exams (presumably to monitor her pain reactions). She refused to elaborate any further, unfortunately.