Justin Bieber appeared on Late Night With Jimmy Fallon last night, and while they chatted about his charity work and his new album, things got really interesting when the two had a mock basketball shoot out. Not only did the Biebs flash his abs before trying to throw an assortment of items through the basketball hoop, but much to Jimmy's delight, he made out with a mannequin head!

When the two sat down for their interview, the pop star revealed that police "really like" to pull him over in his white Ferrari, but he swears he never speeds or does anything that bad. "I'm having fun being 18, enjoying my life, and being responsible." Hmm, responsible? He seems to have forgotten about all of those party pictures hitting the web a few weeks ago...

Bieber will be hosting Saturday Night Live on February 9, and here's a sneak peek of what we're in for with the first promo: