Robert Pattinson is afraid of auditions. He gets nervous and uncomfortable so his ritual is to throw up. He told Guardian via Celebitchy whenever he gets a call from his agent, he becomes a mess and can't deal with it.
“I just can’t … I literally can’t do it. It’s just me looking uncomfortable, trying to put on an American accent … or sitting in the corner, making myself throw up and punching myself in the face.” What helps get him past the neuroses, what happens after those excruciating 45 minutes that helps him perform. “Just that you think that someone actually believes you can do something,” he says. “That makes me sound like such an idiot. It’s crazy.”
And Twilight was his hardest:
“I think Twilight’s probably the hardest part I’ve done, because to do it for five movies, it’s really hard to think of stuff that’s maybe not boring. Especially if you don’t die. Because what’s the drama? You’re not scared of anything! And that’s the whole essence of drama: life and death.”

Gross, Rob. Just gross.