Lap swimming on Monday starts at 5am, and I was first in the gym/pool complex, apart from the receptionist of course. Being the earliest, I took my time getting changed and even did some stretches by the poolside. After a quick check of the drawstrings, and a little squeeze of the bulge, I dove in, ready to swim my usual 50 laps in the pool in my tight black speedos. I've got a fairly average body for a 19 year old, quite short but a really nice ass, which attracts attention when I wear my really tight black speedos. By my 20th lap, a random thought popped into my head: how it would feel if I swam naked? Surely no one would mind since its always empty at this time. I decided to untie the drawstrings of my speedos and push off the side of the pool as hard as I could to force them off. First time, they stayed on, second time they came off my ass but no further, third time they were at my ankles and I couldn't swim properly. After a few more failed attempts, it worked and I immediately felt the freedom of my cock and balls against the cold pool water. I was getting aroused by the thought of someone coming to swim and seeing a naked man, his juicy round ass cheeks on show for everyone. For the rest of my laps, I forgot about everything and just enjoyed my swim, with no speedos, no people watching. Or so I thought..
As I finished my 50th lap, I grabbed the side wall, looked up and saw the huge 6ft frame of the receptionist, and pool lifeguard..? Oh no, he was holding my wet black speedos! My face went red but my cock was growing harder. This guy was tall and muscular, with a fully shaved head and a pretty big package from where I was looking.