When he's not rapping drunk in Japan, Quinton Jackson is slapping drunken fans in the U.S.

After a long, hard few days of running down the UFC on Twitter, figuring out he needs surgery on both his knees, and taking his love of testosterone replacement therapy (TRT) to Sylvester Stallone levels, "Rampage" hit a nightclub in Los Angeles to wind down.

And wind up five fingers for one lucky fan who was begging to be slapped. Requested and received.

For what it's worth, the fan offered his chin up and gave no resistance to the shot to the dome. Despite this, Jackson still hasn't knocked anyone out since Wanderlei Silva back in 2008.

Tsk tsk.