Ellen Hilariously Scares Justin Bieber With a Guy Dressed as a Calvin Klein Model

The tables turned on Justin Bieber when he sat down with Ellen DeGeneres on Friday. Although the pair usually teams up to scare people together, Ellen decided to prank Justin this time. Midinterview, as she asked Justin about the upcoming Comedy Central roast, a man in Calvin Klein underwear (of course) popped out of a box designed to look like a table beside Justin's chair. The singer freaked out, screaming before saying, "Why me? I'm the prankster!" Ellen joked, "He was trying to be as good-looking as you." Watch the funny clip above, and then get a quick refresher on 21 things they'll probably mention in the Justin Bieber roast.