"I had serious nightmares where I'd wake up in the middle of the night for, like, three weeks after that. I really thought that was it for me. I was thinking, 'Justin is 17, so he's going to juvie (juvenile detention), but I'm going to big-girl prison." Taylor Swift had sleepless nights for weeks after pal Justin Bieber pranked her for TV show PUNK'D. He masterminded a firework stunt, during which Swift appeared to set fire to a boat, where an at-sea wedding was being staged.