After Justin Bieber was arrested in Miami for drag racing while drunk and high on prescription pills and pot, the pop star's misbehaviour is not funny anymore. There may be a tendency toward comparing Bieber's downward spiral to Britney Spears from a few years ago, but that would be a mistake. Yes, Britney lost her shit but Bieber's acting like an asshole. And there's a huge difference. Brit had real grown-up problems and real bad influences that led to her downward spiral. Bieber, well, broke up with Selena and turned 19, I guess.