Trapper Keeper is a brand of loose-leaf binder. A Dawson's Creek Trapper Keeper was featured in the Season Four episode of the same name.
Background[]
In the episode "Trapper Keeper", Kyle takes a Dawson's Creek trapper Keeper with him to school. Cartman brings a more advanced version of the binder to school, the Dawson's Creek Trapper Keeper Ultra Keeper Futura S 2000 in order to outshine Kyle. Cartman brags about his new binder, attracting the attention of a mysterious man with the pseudonym Bill Cosby, who makes several attempts to take it from him.