Jon Stewart on Monday questioned Donald Trump's eligibility to be president, calling the presumptive GOP nominee "a man-baby."

"Are you eligible to run if you are a man-baby? Or a baby man?" Stewart said during a taping of David Axelrod's podcast "The Axe Files" at the University of Chicago's Institute of Politics.

"Look, I don't know -- and again I'm not here to be politically incorrect -- if they're referred to as man-baby Americans, but he is a man-baby," he said. "He has the physical countenance of a man and a baby's temperament and hands."

Get Breaking News Delivered to Your Inbox

Stewart, who signed off as host of The Daily Show last August after a 16-year-run, pointed out that he has a history of making fun of Trump.

"I think we referred to him as a boiled ham in a wig...who knows," Stewart joked Monday.

Stewart said Trump once tweeted at him and he decided to tweet back at him with his "real name."

"I don't know if you guys know this, but it's F***face von Clownstick," he said. "We wanted to know why he was running away from the von Clownstick heritage."

Stewart also mocked Trump's idea of "political incorrectness" when it comes to Muslims.

"Muslims, hey man, all he's saying is they're evil and they shouldn't be allowed in this country. He's just telling it like it is," he said. "But god forbid you say Happy Holidays in December, it's f***ing war."

Stewart also got serious and said, "The problems in this country is not because of Mexicans and Muslims....You have one party in American whose sole purpose is to freeze the government and not fix any of the problems associated with it."

He also touched on Democratic presidential candidate Hillary Clinton.

"I imagine her to be a very bright woman without the courage of her convictions -- because I'm not even sure what they are," he said.