Genres that you wouldn't even bother thinking about exploring? There's just something about them that makes you think 'why bother listening to that, itll be shit'?

Mine's are;
Psy-Trance
Black Metal
Zaidico (or however it's spelt)
Bluegrass

Used to include Dubstep in there. Most anything else is fair game and tried on its merits and my mood at the time.

Which genres do you irrationally dislike?