Joan Rivers: Let's face it, mean will always make you smile. And Joan Rivers is a bitch. A really funny bitch. That's we we love her tweets, which are often hilarious one-liners about celebs. Whether it's about Lady Gaga ("Lady Gaga's new song is called 'Born this Way,' but I totally disagree. I think dressing like an idiot is a lifestyle choice.") or John Galliano ("Don't worry too much about John Galliano. He's already gotten his next job...designing costumes for Mel Gibson's rallies."), the comedian takes no prisoners. And we love it.