“Amityville” is the name of a town in Suffolk County, NY; also the setting for The Amityville Horror.
Pretty sick place… but Em claims that Detroit is sicker. He spits about evil acts and gruesome events that happen in the town.
The track was originally supposed to feature Outsidaz members Young Zee and Pacewon, but Dr. Dre complained that the album had too many features, which resulted in Eminem removing their verses and making the last one himself. Pacewon confirms this in an interview and adds that he believes that their verses have been permanently deleted
This resulted in a rift between Eminem and Pacewon specifically. The latter has released diss tracks aimed at Eminem since this episode.