Floating

Then you see it... your swim trunks floating on the water in plain sight. Everyone else sees it too.

"Oh my god! That's so funny it actually happened to someone here! I wonder who's swimming around here totally naked!" Your crush exclaims, and you're grateful she at least didn't see you before you got in the pool, so she has no idea they are yours. However... everyone else does. And they're all looking at you giggling.

"Uhhh omg, that sucks for uhhhh whoever that.. that happened to," you spurt out, unconvincingly, and then everyone breaks out in hysterical laughter and you turn redder than anyone thought possible.

"What's everyone laug.... oh, oh my god, are these... yours?" She knows. "Hahaha omg, and you were just standing here listening to us talk about how embarrassing it would be if that happened to someone, that must have been TORTURE! Oh, you're so red, awwww, it's ok, it's not like YOU have a tiny penis or anything... right?"