Justin Bieber crashed Chatsworth Charter High School's prom this weekend and stayed just long enough to do some half-assed dance moves. Nothing says #memories like the Biebs showing up and dancing with your date, so obviously there's footage of the singer throwing up his ones and kind of twirling around. Actually, it almost looks like he was about to break into this, but then he skedaddles. (Maybe because he was pretending he was at Stagecoach ... and then realized what he was doing.) Anyway, this is what true happiness looks (and sounds) like in 2015.