I have a few myself
1) The muscle head groups that act so hard to look cool. They use the gym as a hangout and a place to be loud and show off how strong they are.
2) They guy who is always walking around looking like they are mad at the world about something. They usually look in the mirror to see how mad they look while looking at their chest/arms.
3) The dude who does a set then goes up to the mirror and lifts his shirt to see how ripped he looks. Come on bro if you want to do that
wait till you get home.
4) The dude has on a t-shirt that is 1-2 sizes 2 small...whis is usally some lame designer brand. Come on buddy there are not scouts looking for Holister models
5) Chicks that go to the gym for the main reason to get checked out. You watch them walk around and they are always looking to see if dudes are drooling over them. Most of them are blesses with genetics where they look awsome w/o working out. Then when you see them work out they put forth no effort at all b/c they dont want to break a sweat so they wont look as pretty.