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Everyone's afraid of something. And if you're not, chances are you're not really human -- because even celebrities, those citizens we put on pedestals, have phobias, some of which can seem far from normal. But even outside of Hollywood, if it exists, chances are someone you know is afraid of it. Yes, even rainbows. (That's called iridophobia.)

There are few things we love more than drag queens, but when there's no 'RuPaul's Drag Race' marathon on, we'll take celebs cross-dressing any day. Even if some of them really should stay in their assigned genders. Not everyone can pull off both sexes, much less one, but some can unfairly cross the line between male and female with ease.

Twitter has been giving celebrities a platform to air their opinions and what they ate for breakfast since 2006, and boy have they. It's also given them a place to interact with other celebs and share their grievances with one another. This of course has inevitably led to a new form of communication: The Twitter slapfight, in which stars duel over the internet in 140 characters or less (often to t