Wikipedia
Zeisters
Zeisters, also known as Fat Guy Goes Nutzoid, is a 1986 comedy film produced by Troma Entertainment. Troma was originally set to title the film Fat Boy Goes Nutzoid, but, at the request of the lawyers of the hip-hop group The Fat Boys, it was changed to Fat Guy. It is directed by John Golden, stars Joan Allen, and features original music by Leo Kottke.
The plot revolves around two brothers who befriend an escaped mental patient (the titular “fat guy”) and accompany him on his misadventures in the big city.
The film is one of the most popular movies in the Troma library, mainly because of its offbeat title. According to the video box, Barry Nolan of Hard Copy states that this is his favorite Troma movie.