He spent seven years at "Saturday Night Live" and worked with dozens of celebrity guest hosts during that time, and now Will Ferrell finally revealed his least favorite.

In an interview on "Watch What Happens Live," the "Anchorman 2: The Legend Continues" star participated in a game of "Plead the Fifth" with host Andy Cohen.

When asked who his least favorite "SNL" host was, the funny man thought carefully, before joking, "Least favorite? Joan Allen. She was a real turd. I mean, you know about Joan. Real hell." Joan Allen is an Academy Award-nominated actress who hosted the show back in 1998.

Though he seems absolutely shameless on screen, Will did answer when asked about the last time he felt ashamed. Speaking candidly, he shared, "Last time I really felt shame was when, my first day of filming Anchorman 2. Harrison Ford worked that day and at the end of the day he asked me to go to dinner by just saying, ‘Dinner?' And I said, ‘No, I have some in my trailer," thinking he was just literally asking me if I had some dinner, and I realize, ‘Oh no. He just asked me out to dinner,' and not only did I say no, in his mind it was like, ‘No way in hell.'"

Check out his responses in the player below.