Tim Allen, Craig Ferguson Have a Hefty Talk About Male Body Parts (VIDEO)

Johnny Carson must be turning in his grave.

Tim Allen was a guest on Thursday's edition of 'The Late Late Show With Craig Ferguson' (weeknights, 12:35AM ET on CBS) and what started out as a discussion about Allen and his daughter going to England to research his family evolved into a discussion of the male member.

"My real name is Dick," Allen said, knowing full well that would generate snickers. "Easy," he said. "I've heard every joke." And from there it was a short trip to talking about slang words for, as Ferguson said, the "pee-pee," then on to talking about the size, heft and weight of penises.

We're not prudes, but some things just don't need to be talked about on national TV.