Usher may be a talented singer, dancer, actor and former judge on The Voice, but there are probably some waiters out there who would say he’s a bit of a jerk. According to sources, Usher visited a restaurant years ago and tried to use his celebrity status to get the bartender to sell him alcohol, even though he was under 21. Years later, he went to the same restaurant and left his autograph in lieu of a tip. Both instances sound pretty obnoxious. He’d better start using more manners if he wants to get back in the good graces of his fans.