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In a recent interview, Gossip Girl Blake Lively talked about how much she loves to prank her friends.  She said that she's a real "prankster" and loves to mess with people.  One of her favorites is to "…swipe my friends with, like, my phone or something…I slide it in their butts." I don't really understand the prank, but if I ever run into Blake Lively, someone remind me not to borrow her phone.