Jason Derullo attacks man that called him Usher at exit point of Las Vegas Casino .
According to TMZ, the man seemed to troll Derulo by yelling, “Hey, Usher! F*** you, bitch!!!” That’s when Derulo got pissed and punched him right in the face
Jason’s security and the security officers in the Casino couldn’t hold back as he was seen throwing several punches on the unknown man. The singer was later cuffed away.