Stephen Colbert asked Cuban why he flip-flopped from saying the real-estate mogul was the "best thing to happen to politics" last year to changing his stance in May, and then announcing he has become a "Never Trump" supporter on Twitter earlier this week.

"At the beginning, he was a businessperson," Cuban explained. "I wanted to see a change from the traditional politician, but then he went and opened his mouth."

Cuban then added, "He had a really good chance to be different and really have a chance to change things, but he doesn’t do the work. He’s lazy."

Colbert then wondered what the Billionaire Boys Club thinks of Trump. After joking that they've stopped inviting Trump to the meetings and changed the secret handshake, Cuban explained that the real proof is in who's donating to the Trump campaign.