Rap. About the only rap I can even think about tolerating is Eminem, and even then it's on a song by song basis.
As a biracial individual, black/white, I cannot express in words how much I despise/detest/loathe/hate the racial stereotypes that most rap glorifies and perpetuates. For me, this one is personal.
I'd rather listen to Rebecca Black's Friday a thousand times than hear even a second of C
rap.