David Alan Grier Isn't Mature

David Alan Grier stopped by to promote his new book, "Barack Like Me," and said he hoped the book's profits would cover the cost of his upcoming divorce.

Howard asked if the couple were handling the split like adults, but David confessed he wasn't a mature man: "That might be the problem." David told the crew he could've used maturity on the "Dancing with the Stars" set, as the judges require a humbling amount of ass-kissing.