The most annoying to me are:
1. Guys that shave their head just to try to look like a badass.
2. Superman tattoos...or practically any tattoos, really. Do you not realize that's gonna be on you the REST OF YOUR LIFE when you visit the local tattoo shop? Women getting a tattoo on the bottom of their back of a small bird or a damn butterfly that don't realize that's gonna look like a condor when they are 25 years older and 100 pounds heavier. Tattoos are just flat out tacky.
3. Guys that workout in boots...any kind of boot.
4. Guys that drink damn cell-tech or some shit like that in the locker room. Unreal.
5. Guys that make a ton of noise when they are lifting little ass weights. This one guy had been hitting my gym back in October and November and was borderline YELLING when doing incline presses with 30 POUND DUMBELLS. Now I know why I wear headphones and don't pay attention to others that much unless I have to.
6. Guys that don't train legs. Always some bullshit excuse as to why, too. I'd love to hear a guy just admit he's TOO LAZY to train them...
7. Guys that wear pants in the gym year round because they don't train legs and are ashamed of what they look like...pants with a string tank top is the worst.
8. Fat women in spandex.
9. Anyone who's abusing steroids that has no desire to compete. There is an idiot in every gym in the country who probably takes as much shit as Ronnie Coleman but doesn't even do shows...he just wants to have the biggest arms at the nightclub...and he doesn't train legs...