At the beginning where Wayne's Suck-Cut guest comes on and Benjamin's girlfriend is watching, he makes a phone call to have the show recorded. When the show is replayed for Vanderhoff, it's not the same show because he says "Garth, he's gonna put that thing on your, on your melon".
He actually says that both times; you can tell they were different takes because Mike Myers stutters in the taped version and not in the full version. Also, since Benjamin was watching that very episode when he first decided to market the show, he wouldn't have been taping it. The show was live, and probably wouldn't be rerun or available on tape from the cable channel.