Unless you've been hiding in a cave, you probably already know Joaquin Phoenix has supposedly given up acting to become the next Vanilla Ice. When he grew out the bushy beard and started showing up everywhere in shades, most people figured this was all an elaborate joke. And maybe it is. Or maybe Joaquin really has lost his shit. It's fun to watch either way.

As the above video reveals, while performing at the Fontainebleau Hotel in Miami, Phoenix exchanged words with a heckler in the crowd and then did what any crazy rapper would do: he jumped off stage and went after the guy. The crowd seemed to enjoy it, as they supported him by repeatedly chanting, "beat him up."