Quinton "Rampage" Jackson wants all the smoke -- the mixed martial artist tells TMZ Sports he's dead serious about fighting Shannon Briggs ... and when he does, "he's gonna f*** him up."
"That guy's a f***ing a**hole," Jackson told us this week. "I want to box and I think that his old ass would be a perfect match to be my first boxing match."
"I'ma f*** him up. I'm sick of that guy. All he does is troll me. Imma f*** him up."
Rampage didn't stop there .