Luke didn't talk as much as he usually just used a burst of soulfire to knock someone out. It wasn't violence, not exactly. He made a quick upward motion with his right hand, and one of the other drunken guys went shooting him, hitting the ceiling and coming back down.
Okay, so maybe using psychokinesis was a little unfair, but he didn't really care. He was the Devil's grandson. A little cheating was expected.
"All this just because I lit a literal fire under someone's ass. Where did people's sense of humour go, I ask you?"