Sort of inspired by the which qualities is worse thread, but just a general thread about what people's more specific (or quirky) turn on/offs are when it comes what attracts you to the sex you're interested in. Can be personality to looks to everything else.
I guess for me, the biggest turn on/off looks-wise for a guy is hair. If a guy has bad hair (and that's anything from style to hygiene), it's an immediate turn-off for me. Hair is the first thing I notice on a guy and it's something I continue to notice throughout. Nice hair can immediately make me feel more attracted to a guy, and bad hair can make me instantly feel turned off by the same guy.
This is also something I notice when it comes to judging whether or not I think a male celebrity is attractive. For example, the only times I have ever thought of certain men to be attractive was when they had nice hair.