I remember one time, probably a good 20 years ago now, that I was sitting in the sauna inside the men's changing room at my gym here in Manchester. There was one guy sitting directly facing me who was pretty hot, not quite daddy but older than me at the time, and another guy at right angles to us who was just average.
Hot Guy opposite me pulled back his towel and let me see it all – and he was slowly, a bit at a time, lengthening along his leg without playing with his dick, just willing himself into an erection while looking me right in the eye.
I did not in any way object but I was shocked he was being so blatant about it, if only because Average Guy was there. But I glanced at him and he was either fast asleep or at least miles away and not paying attention to the other two of us at all. Hot Guy had obviously realised that and also pegged me as willing, so he was making his intentions as clear as he liked.
I couldn't help but smile – he knew he had me now – so I stood up, rearranging my towel so only he would get a quick flash of my own hardening dick without Average Guy seeing, and headed towards the shower cubicles.
He got my message, and by the time I had made a detour to my locker to grab the spare condom I always kept in there for just such an occasion, he was in the showers himself, with his curtain half open. Five minutes later he was fucking me up against the tiles of that same shower cubicle.
.