Better not poke fun at Patrick Mahomes' body ... unless you want his trainer coming for you!
That's exactly what happened for a local Kansas City radio host ... who criticized the 3-time Super Bowl champs' physique.
The beef was born when host Kevin Kietzman bodyshamed the Chiefs superstar quarterback on his show on Monday, calling him "fat" and an "embarrassment" in response to photos of the NFL MVP celebrating the 4 of July with family and friends.