UFC champ Henry Cejudo says T.J. Dillashaw is OUT OF HIS MIND if he thinks he's gonna be the first "Champ Champ Champ" ... saying he ain't even gonna make it out of January with two belts.
Of course, Cejudo and Dillashaw are set to do battle on Jan. 19 for Cejudo's UFC flyweight title -- and when we told Henry about T.J.'s plans to win 3 belts in 3 weight classes this year, Henry ripped the guy.
"I think T.J. Dillashaw is dehydrated ... he ain't thinking straight," Cejudo tells TMZ Sports.