Too tan
Weird looking/unnatural hair
JEWELRY
trying too hard
coming on too strong
muscles bigger than head (or over developed muscles in general, i just happen to know a guy whose biceps freak me out)
- guys who spit ALL the time
- guys who wear more bling than I do
- guys who stub out their cigarettes wherever they feel like (my floor, my kitchen/bathroom sink, carpet.....)
- guys who take you out shopping and then buy the most expensive stuff just to show off their dough
- bad hygiene
- guys who stick their tongue inside your ear before even saying "hello"
I hate bling. Particularly, the pinky ring and the diamond (or usually CZ) encrusted truck-sized letters dangling from around the neck. Unburden yourself of that yoke, please.
* Being unhygienic/smelly like B.O. -- c'mon, showers are not that hard to come by, and you should REALLY be washing your ass. That said...
* Too much cologne -- smelling good is one thing, bathing in Drakkar Noir is quite another.
* Being socially awkward. Please, learn how to talk to people.
* I'll have to second you "bad teeth." It makes me not want to kiss you.
I'm sure there are others, but a lot of it is on a case-by-case basis. These are pretty good general ones, though.