After the singer quipped that he was really "Derek Bieber," the name became a Twitter trending topic, with some fans expressing amusement and others confusion.

One innocent joke from Justin Bieber is apparently enough to set off a Twitter frenzy.
On Wednesday, the singer was tracked down in Hollywood by a TMZ cameraman, who questioned him about a recent incident where Bieber reportedly refused to give his autograph to an American Airlines pilot.

Bieber basically responded that everything

Justin Bieber Joke to Paparazzi Sparks Internet Frenzy (Video)