‘Rampage’ Jackson threatens to beat up clubber after girlfriend grope

'Rampage': not a nickname you want to drunkenly encounter at the club.

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Quinton ‘Rampage’€ Jackson might be a past-his-prime professional MMA fighter. But he’€™s still a professional MMA fighter. Why in the world would you want to mess with him at a club?

Jackson was caught on video by TMZ getting into a clubgoer’s face out on a Hollywood street after he was told the David Bowie-looking dude grabbed Jackson’s girlfriend’€™s ass.

"Tell my girlfriend sorry and you ain’€™t gonna do that sh*t no more — or you about to go to the f***ing hospital,"€ Jackson told the man.

The skinny blonde guy in question says something back to ‘€œRampage,’€ but you can’€™t hear what it is. It clearly was not an apology.

"You think I’m lying?"€ Jackson said. "€œHe thinks I’m lying!"

Luckily, there was enough security and other people in between them to make sure ‘€œRampage’€ didn’t land the kind of left hook that knocked out UFC legends Chuck Liddell and Wanderlei Silva.

Even if the guy didn’t grope Jackson’€™s girl, it doesn’€™t matter. Just apologize and save yourself from potential bodily harm.

What, did he think ‘€œRampage’€ was above beating the crap out of him? This is the same guy who took California cops on a wild monster truck chase before being subdued at gunpoint in 2008.