I hate the phrase "that sucks". To me, it just epitomizes unconcern for the other person.
I also don't like any hip-hop slang like ima, finna, bruh, swag, etc. Complete disgrace to the English language. Hella is hella up there as far as words I don't like, and I'm from Northern California. The same goes for NorCal and SoCal, can't stand them, especially when they're stickers on people's cars.