I agree. c*nt is a dirty word. I use it too much, but when I hear other people say it, I cringe.
I second insomniak. Uber is annoying. I've got a friend who uses it in replace of "very", "really", "totally", "extreme", etc., so it pops up in every sentence.
"Her hair was uber long."
"I won't vote for the uber-right."
"It was uber cute."
Actually, my biggest pet peeve are people who pronounce "schedule" like "shed-dyel" instead of "sked-dule." Maybe that's just a Canadian thing.
"It's not always about you!!!" (But if you think I'm referring to you anyway, then I probably am.)
"Good luck returning my ass!" - Wilhemina Slater
"This is my breakfast, lunch and f***ing dinner right here. I'm not even f***in' joking." - Colin Farrell