Justin Bieber Can’t Stop Singing Katy Perry’s “Teenage Dream” Either

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When Justin Bieber sat down with Ellen on her show Wednesday, she asked the pop sensation what song is stuck in his head. Not only was the Biebs quick to reply with Katy Perry‘s “Teenage Dream,” he even sang his own acapella version of it! Didn’t set your DVR to record his Ellen appearance? We got the video right here…

Justin also addressed bullying, dating, and Selena Gomez (“She’s a sweetheart.”), and he taught Ellen how to dance the dougie! Watch the full interview below.