Poor form? I don't care, doesn't affect me.
Posing and flexing? Same, doesn't affect me.
Grunting (within reason), again same, doesn't affect me.
But not putting weights away, in the right place? Pisses me off. I like to ask if they live at home with their mother, still. Because it seems like they expect *someone else* to clean up after them.
Standing *right* in front of the dumbbell rack? I will definitely need whichever weight is directly in front of them at that very second, so I will simply say excuse me, while interrupting their exercise by reaching or walking right in front of them. They learn quick.
If someone's curling in the squat rack when I want to do squats, I just put a bar on it and start loading it up. "I'm using this" gets a "you're squatting? Or you can't pick up that curl bar from the floor?" and a stare, daring them to dispute.
Naked in the locker room? Ok, I can understand disliking others' waltzing around for 10 minutes, but what's the big deal about taking off your sweaty shorts, picking up a towel and walking to the showers? Sorry, but I'm not wrapping a clean towel around my sweaty ass on the way TO the shower. Don't like my junk? Don't look at it. Wassamatter, CAN'T HELP YOURSELF FROM LOOKING?
Oh and the prissy fuckwits that wear their underwear to the shower, and take it off in there and fucking hang it somewhere that other people might use... or worse they forget their fucking underwear in the showers....
What the hell is wrong with people these days? I mean, I'm old, and back in my day in high school and college you just expected nakedness in a locker room and showers. But these days it's like it's a mortal sin if anyone other than mommy might see your junk. Same damned rules for the locker room as the urinal, just don't look. Now get off my lawn
