I hate it when guys get too clingy or too concerned about me.
I like having my own freedom and space, so when a guy starts to think that I need rescuing and tries to become my hero..that's when I start backing away.

bad hygiene, someone who wants to be up your ass all the time, people who do drugs and boys who wear their pants half-way down their legs.

for me the major turn off of guys having bad breath and bad odor! i hate it specially when i smell them iiiwww!!!

tactlessness. but that goes for everyone i meet irl