Mark Cuban Burns Donald Trump On 'Late Show With Stephen Colbert'

The gloves are off. 

Billionaire Mark Cuban, the “Shark Tank” entrepreneur and owner of the Dallas Mavericks, dropped by the “Late Show With Stephen Colbert ” on Wednesday night to trash talk his fellow billionaire, GOP presidential candidate Donald Trump .

That’s assuming Trump actually is a billionaire. 

“Donald, do you know that to be a billionaire, you have to have the billion part in your bank account ,” Cuban says. “Not just the air.” 

”Your companies fail so often, you must’ve gone to business school at Trump University,” Cuban said. 

“Oh, Donald  he just dropped you like one of your first two wives,” Colbert chimed in. 

Check out all the burns in the clip above. 

Editor’s note: Donald Trump regularly incites political violence  and is a serial liar , rampant xenophobe , racist , misogynist  and birther  who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.