I think I have the extreme misfortune to know a lot of people that seem to need to quote everything. I had a coworker who would quote movies I'd never seen, and that I'd told her I'd never seen... and the jokes weren't funny at all because I didn't know who the people were or the context the joke was in. Made me crazy some days.
And when people use fake accents that sound *really* fake... makes me crazy too. If you're going to bother to do the accent at least have the decency to do it right...