John C. Reilly Made an NSFW Joke About Fan Who Got 'Step Brothers' Tattoo on His Buttcheeks

John C. Reilly was a guest on Conan on Thursday. Conan alluded to the fact that the film has become something of a cult classic. Reilly acknowledged this was the case, expressed appreciation for it, but then noted that some are taking it a bit far. He brought up a fan who got a ‘Step Brothers’ tattoo on his butt cheeks – with the accompanying Boats and Hoes calligraphy – and had a great (if vulgar) kicker about it.