Justin Bieber Looks Very Excited Playing Pickup Soccer at UCLA

Justin Bieber laced up his cleats, popped off his shirt, and got really pumped up while playing soccer with his bros.

The Biebs hit up UCLA's campus Tuesday afternoon for a pickup game on one of the soccer fields, and at one point was standing at full attention calling out a play.

We're told several college students gathered around the field to watch JB in action and get a peek at his new torso tattoo ... and he put on quite a show.