Famous NBA Star Smacks Justin Bieber At Hollywood Starbucks Recently, Canadian-born pop star Justin Bieber has been making headlines for his reckless actions. But it seems not everyone is willing to let the young troublemaker off so easy. Police were dispatched in response to an altercation at a Starbucks in West Hollywood, after a barista at a coffee house was confronted by Bieber after refusing to serve the teen sensation because he wasnt wearing a shirt. He came in with no shirt on and his pants hanging down and underwear showing and tried to order a caramel apple machiatto, claims Joey Goldsmith, the barista, I just told him he would have to put a shirt on if he wanted to order. At that point, Bieber snapped and started yelling at the barista, threatening that his bodyguard would kick his ass. Within earshot was LA Clippers player Blake Griffin, who decided to step in. According to witnesses on the scene, Griffin tried to calm Bieber down, but he remained defiant. As a result, Griffin ended up smacking Bieber and knocked him to the floor. He smacked the shit out of him, one witness claims, then I saw Justin stumble out of the door looking like he was crying. 