"I'm gonna f****** knock his teeth in!"
Uhhhh ... that's "Platinum" Mike Perry promising to go all dental on Jake Paul, telling us he's gonna beat The Problem Child's ass!
32-year-old Perry joined Babcock on the "TMZ Sports" TV show (airs nightly on FS1) ... and two things are clear ahead of his July 20 boxing match with 27-year-old Paul -- he's fired up, and there's a beef between 'em. A lot of it.
"F*** Jake, bro," Perry said .