(New York Post) Donald Trump became the butt of his own joke last week when he extended a challenge to President Barack Obama to release his college records and passport applications.

Now Mark Cuban, another business magnate who can spare a few million bucks, has flipped it on The Donald.

First, he told Fox4 in Dallas that Trump’s offer “was one of the dumbest things ever.”

He then added, “But, I thought about responding to him. Maybe if I put up a million or two million, he’ll shave his head?”

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