Comedy can leave a mark. Just ask progressive comedian Bill Maher.

Maher graced Craig Ferguson’s desk on The Late Late Show Tuesday, and the Real Time with Bill Maher host was blindsided by a joke that clearly rankled him. Ferguson was busy toasting Maher’s long career when this exchange broke out:

Ferguson: You have to get a sense of autonomy from the, from the, you know, the Borg that controls you – in my case CBS, in your case the Democratic Party.”

Maher quickly grimaced leading Ferguson to add, “Oh it’s a joke, Bill, it’s a joke.”

Maher, with very few exceptions, parrots Democrat talking points better than even paid Obama spokespeople. He just doesn’t like to get reminded of that fact.