Dallas Mavericks owner Mark Cuban slammed Donald Trump Tuesday, saying that he should be credited for getting "stupider before your eyes."
"You know what?" he asked Renee Bargh on
Extra in an interview. "It’s rare that you see someone get stupider before your eyes, but he’s really working at it.
"You have to give him credit," he added. "It’s a difficult thing to do, but he’s accomplished it."
He also questioned Trump's business acumen.
"Name one good deal he’s done," Cuban told Bargh. "When he talks about his great renegotiations, they’re renegotiations.
"So, tell me if you think this is a good deal: I lose four casinos. They go out of business, but I’m really good at renegotiating the debt of his companies that have already gone out of business."
The "Shark Tank" host also said that he and Trump were friends, but that they have not spoken in the last month.
"He sent me an email when I started picking on him," Cuban said. "What happened was I really didn’t like Ted Cruz, so I started helping Donald, tried to encourage him, 'cause I thought he’d be — and to this day thought he’d be a better candidate than Ted Cruz.
"But at some point, you’ve got to start learning and understanding the issues, you know?" he continued. "Donald has been at this a year, but you don’t look at him and say, 'Wow, he’s gotten so much smarter on this topic or that topic.'
"In fact, you look at him and say, 'What the hell are you talking about?' That’s not good for America."
Cuban also ripped Trump on Twitter earlier Tuesday:
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