This episode is about Louis making a backyard film, using friends as actors and Tom as his assistant. In an epilogue, we see out-takes, one of which shows Tom cleaning a lens, apparently unaware that the camera is on and is recording his trash-talk about Louis, finishing with, "He'll be sorry he ever messed with . . ." - then he says his own name, which sounds something like "Tom Miglowski". The first syllable of his last name is unclear, but he definitely ends it with "...lowski".
Tom's last name in subsequent episodes of the series, and in the IMDb credits, is Gribalski.