Every chance I get, I go on a course where I'll usually meet some lovely people and learn some pretty spiffy things. On one of these was my first experience...

I was 17, on a weekend writing course at Ty Newydd, which I think is near Cardigan bay. The saturday night most of the group went down to the nearby village; I must confess at this point we were not planning on going to the beach, but were hoping to find a store to indulge in snacks and alcohol but it was too late. We weren't about to go back after such a short time though, so we wandered and found the beach.
While we were messing about, someone said they wanted to swim. Most of us agreed since it was night/deserted, but noone wanted to get their clothes wet and with some being hesitant about stripping (I was silent through this debate, but nerves had already ready set my heart thumping) it was decided all or none. We all stripped.

I, along with two others, lagged along the back. After a few minutes we relaxed and began just having fun, right up to where we got dressed again it was the most comfortable I'd been in a long time.
My only regret is that I've lost touch with all of them, but maybe I can at least explore/expand on this experience.