A week or so ago, real-estate mogul Donald Trump made an announcement that if USA president Barack Obama released his college transcripts that he would donate $5 million dollars to the charity of Obama’s choosing.

Dallas Mavericks owner Mark Cuban caught wind of Trump’s offer and decided to lay-out his own challenge but this one was for the Donald.

Cuban during an interview on the local Dallas Fox affiliate presented this offer to Mr. Trump: if he shaved off his trademark hair, he would give one million dollars to the charity of Trump’s choice:

“The offer he made for $5 million, that was one of the dumbest things ever,” Cuban mused, eyes rolling big-time. “But I thought about responding to him, maybe if I put up a million or two million, if he’ll shave his head?”

The Shark Tank star then looked right at the camera and offered a biting rejoinder:

“Donald, you shave your head, $1 million to any charity you want,” he said.