A couple of years ago I was in the changing room of a hotel swimming pool. I went to the shower and pulled off my speedos. There was one other guy present, naked with his back to me. I was turned on by his ass and began to be aroused. I was about to reach for my towel to cover myself but I enjoyed having an erection in front of the guy. Neither of us said anything and I took my time getting dressed. The other guy finished getting dressed and left whilst I was still naked, with a full erection. At the exit he turned round and looked at me for a few seconds, but unfortunately neither of us knew what to say. Have any guys had a similar experience?