Here's a little slightly embarrassing moment from my misspent youth.
A group of us were doing Spring Break down on the Gulf Coast near Panama City, and we were swimming near darkness in deep water, cavorting around. Just on a lark I decided to give my boyfriend a little squeeze, so I gave him one after sneaking up on him underwater from behind. No problem, I thought, despite my approach from behind and underwater: he's the one wearing the blue swim suit. This was intended as a hint of what could occur later on tonight.
My total bad! I thought it was my boyfriend that I gave this little squeeze to, but it was someone else.
More to the point, he was not wearing an athletic supporter.
The other guy gave me sly looks for the rest of the evening.
But, I figure, what harm was done?