Jake Paul says his DMs are getting bombarded with verbal jabs from the Gypsy King himself, telling us Tommy's heavyweight champ brother Tyson is already talkin' smack ahead of their fight.
The Problem Child joined Babcock on the "TMZ Sports" TV show (airs nightly on FS1) shortly after Tommy posted footage training with his big bro ... and Jake gave us his first impression of the video.
Long story short ... Jake says Tommy should lay off the junk food, and quit trying to fight like Tyson.