What I read here is almost unbelievable: there is more action going on in all these str8 gyms than in gay saunas.
I've heard stories about gyms here in London (both gay and str8) but they always keep an eye who's coming and they stop.
I don't know it very well but here in the UK, the Sexual Offences Act all allows people having sex as long as nobody can't see you or hear you, so if two guys get out of a toilet together after having had a mutual blow job, there's nothing illegal.
My opinion on that is rather ambiguous, it could be well horny but I think most gay men would abuse of this, making locker room and facilities a dreadful and anxious place to get in (as it happens sometimes in gay saunas: persistent cruising stalking you or just wanking in front of you under the next shower - no, they're not cute or sexy).
Anyway, sometimes I realized when the situation got very hot and it happened of being victim myself of semi erections many times.
One day I was having my shower without pulling the curtain and I noticed a guy came, he came in the shower room with his pants on, that's very strange - I don't have any problem and I enjoy being naked.
He went to have his shower, and pulled the curtain.
I saw his knob (big), then he came out and practically we were drying each other one in front of the other, he started having an erection hence I started to have an erection.
He looked at me but he didn't talk.
I think he entered the showers just for the purpose of seeing who was there, I didn't see him before.
As I exited the sports centre, I saw him outside with a group of guys standing together silently, very strange, looking at me as I was going away, doing something with his mobile phone.
That situation made me so excited -I have to take in account testosterone peak after physical exercise I suppose- that I had a boner all the time, I had to keep my bag in front of my cock while I was waiting the bus, and later when I was on the bus, I came home and I had one of the wanks I most enjoyed in my life.
That's what turns me on: gym locker rooms, communal showers.
Club instead are a big turn off, and although I LOVE gay saunas, the presence of ugly persistent cruisers (those who don't take no as no, because they just think to be special) is a big big big big big big turn off.
I can't imagine how off putting must be for a straight guy finding himself in the middle of something like that in his local gym.
I think gay men should get a grip about that, we're getting more and more tolerance[*] and we don't give respect back, not to mention the respect between gay people in sexual contexts is often an optional.
[*]: here in the UK not only religious institutions have been shut up about gay adoption, not only the sexual offenses act take into consideration for instance public sexual areas and starkers, but amongst all the already existing laws against hate crimes, there's going to be a law that anyone making a hate homophobic speech will risk up to 7 years in jail.