My wife is not an exhibitionist, but she likes to be confortable at the beach.
We use to go to a beach, 60 miles from home, frequented by couples and families but very wide, where she can stay topless without any problem.
While we were walking to find a quite spot, we met a couple of friends of ours.
We stopped, dorpped our towels, and the ladies sunbathed and chatted all afternoon long.
We knew that our friends are very very prude: the other lady wore a very conservative bikini, and my wife a one-piece swimsuit which she usually wraps on her waist, but which in that occasion she kept respectfuly on.
At 8 p.m., it was time to pack on and leave.
The beach was nearly desert.
The other couple didn't touch the water, so the guy wore a t-shirt and trousers over his shorts; the lady just put a long dress over her bikini. My wife, who had a couple of dips, was still in her wet swimsuit.
Predicting what was about to happen, I moved 30 feet away. Now my wife had to remove her swimsuit, in front of the fully dressed couple and with me disappeared.
"Come here, hold my towel", she cried, but I answered "No", pretending to have something else to do.
Our prude friends were very upset, as it was very clear I wanted my wife to get naked before them.
My wife was quite furious.
"Ok", she told them, "at least please turn around", what they immediately did.
She took off her swimsuit, cleaned off the sand, and wore her normal underware and clothes.
Nobody saw anything, exept me enjoying the little show my wife in all her glory, bare naked 3 feet away from our friends.
Everybody were very disappointed. That made to whole scene eve more exiting.