Dallas Mavericks owner Mark Cuban is responding to Donald Trump's offer of $5 million to charity if President Barack Obama releases his college transcripts and passport documents by challenging the billionaire birther to shave his famous head of hair.

In an interview with KDFW on Thursday, Cuban called Trump's offer to the president "one of the dumbest things ever."

"I thought about responding to him," Cuban said. "Maybe I'll put up a million or two million if he'll shave his head."

"And you'll give the money to charity?" reporter Heather Hays asked.

"What ever charity you want," Cuban agreed. "Donald, you shave your head, a million dollars to any charity you want."

Comedy Central host Stephen Colbert has also offered Trump $1 million from his super PAC "if you will let me dip my balls in your mouth."

Watch this video from KDFW, broadcast Nov. 1, 2012.

Dallas News | myFOXdfw.com

(h/t: Dallas Observer)