07/31/2013 06:48 pm ET

Adam Brody Talks 'O.C.' Co-Stars, Does Greg Brady Dance On 'WWHL' (VIDEO)

Adam Brody's "O.C." years may be long behind him, but, while on "Watch What Happens Live" on Tuesday, the actor revisited the Fox soap that made him the ultimate nerdy heartthrob as Seth Cohen.

Host Andy Cohen showed Brody a clip of Tate Donovan's interview on the show from March. The actor, who played Jimmy Cooper, Marissa's (Misha Barton) father on the Fox series, jokingly said of the young cast, "They all started out great ... Then, all of them, they just fell apart. When you first get fame, you're so insecure that you just become a ding dong."

Brody thought the clip was hilarious, but then, things got serious when Cohen revealed they'd be playing a special "O.C." edition of "Plead the Fifth," in which the guests are asked three questions and can only refuse to answer one of them.

Here's how Brody's "O.C."-specific game went down

Cohen: Who is the bigger MILF: Julie Cooper [Melinda Clarke] or Kirsten Cohen [Kelly Rowan]?
Brody: I would say Julie only 'cause she relishes it.

Cohen: On a scale of 1 to 10, 10 being the most, how big of a bitch was Mischa Barton behind-the-scenes of "The O.C."?
Brody: A 2. A 1.
Cohen: 1 being the highest?
Brody (jokingly): Yes.

Cohen: Who is the better kisser: Rachel Bilson [who played Summer Roberts] or Olivia Wilde [who played Alex Kelly]?
Brody: Well, you know, I was dating Rachel at the time, so there were less barriers. So, Rachel.

The actor bravely chose to answer all the questions and that wasn't his only act of courage. Unlike the Generation X-ers watching, Cohen was excited to have Brody on the show, not for his "O.C." fame, but for his days as Greg Brady.

Brody played Barry Williams (who starred as the eldest child on "The Brady Bunch") in a 2000 TV movie about the behind-the-scenes of the show called "Growing Up Brady." All Cohen wanted was for Brody to show him the dance he did in the movie.

“Please stand up with me and just show me the Greg Brady dance?” Cohen asked. “I'll do what I remember! I haven't seen this in a long time," Brody said, before busting a move, as you can see in the video below.

"Watch What Happens Live" airs weekdays at 11 p.m. ET on Bravo.

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