As award season continues, hopefully with an Oscar nomination on Tuesday for Shame‘s Michael Fassbender, we expect George Clooney’s Golden Globes joke about the actor’s private parts won’t be the last we hear. So we’re creating the Fassbender Package Punchline Watch. We begin with last night’s Late Show With David Letterman appearance. It was Fassbender himself who cracked a penis joke when asked how difficult it must be to play a role as dark as a sex addict:

Letterman: I guess the question that I’m clumsily struggling with here is, is it as hard on you as it is on the character? Does that make any sense?

Fassbender: Well, it was flaccid most of the time. [Mimes a rimshot]

Watch the interview below. You’ll also enjoy Fassbender clearly biting his tongue when Letterman says the role was “quite a lot to shake off,” as well as tongue-tied Dave’s genuine interest in getting to the bottom of the threesome scene (or as Fassbender puts it, “coming together of three people”).

P.S. Michael Fassbender is still a “penis expert.”

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