sex gym
When your date or person of interest has two places of residence and uses the term to loosely describe the one residence which they share with a roomate who happens to be of the other sex.
I don't want to show you my apartment because it's a 24/7 operating sex gym.
gym sex
The act of making continuous eye contact with a person at the gym and both persons simultaneously work harder until reaching a peak of workout intensity.
Me and this really hot trainer totally had gym sex this morning!
gym sex
When you use your sweat from a workout as lube
Dude, I had some slimy moist gym sex with that girl.
Gym Sex
Named via a session of hardcore or intense intercourse where a lot of sweating and panting is involved.
I can’t wait to get home, you and I are gonna have gym sex!