i had a dick slip incident, back in the day. we're talking 1992. i was 18 and me and my family were holidaying in france, next to a popular lake.
back then, speedos were the order of the day, especially in france (and europe generally). boardshorts hadn't been invented! and noone would have dreamed wearing them anyway... too old fashioned and cumbersome.
anyway my elder brother and i had been swimming in the lake. unknown to us were a group of NUNS looking on. as i got out, the water dragged my speedos down and there i was only a few yards away with my cock out!
i've always been quite a big boy too. VERY embarassing at the time but bro and i have laughed about it ever since. the nuns were smiling!
not much of a story i'm afraid.... but it's true.