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Jack Black and James Marsden Answer Intimate Questions on ‘WWHL’ (Video)

The ”D Train“ costars play ”School of Cock“ with Andy Cohen on the late-night Bravo show

James Marsden and Jack Black spent countless hours together playing former high school classmates on “The D Train,” but how well did they actually get to know each other?

Andy Cohen was determined to find out on Wednesday’s episode of “Watch What Happens Live,” kicking off the show with a game of “School of Cock,” in which the two had to identify celebrity crotches.

“Can they I.D. each other where it counts?” the Bravo host asked, as he showed closeup shots of their tackle — or was it Russell Simmons‘?

Cohen then forced Black to “plead the fifth” and quizzed him on whether he had ever made out with a dude. He said “once” and “there was tongue,” but he wouldn’t reveal who the lucky guy was.

Black also had a short-lived relationship with Kathy Griffin, whom he said was “very liberal with her freakiness … it was enjoyable.”

Having made out with Marsden on “The D Train,” he rated his costar as an “8.8” when came to kissing.

Watch the video here.