Jake Paul sharpened his trash-talking tools this week ... but it wasn't with his next boxing opponent, Tommy Fury -- the Problem Child traded verbal jabs with sports personality Bomani Jones in a heated interview.
The YouTuber-turned-pro boxer joined Jones' "Game Theory" this week ... and things went from 0 to 100 real quick.
In a clip from the HBO show, Bomani asked how the undefeated boxer would react if he ever loses a fight ... and Jake made it clear he has zero intention of ever having to cross that bridge.