TVOH! is a device that records television programs, which first appeared in "I'm a Little Bit Country". It is a parody of the real life company TiVo.
Background[]
In the episode, Cartman recorded 40 hours of the History Channel and hanged himself over a water tank so when TVOH! was done recording it would drop him into the water tank, systematically electrocuting him and giving him visions of what the founding fathers would do, all to get out of writing an essay.
In "Cartoon Wars Part I", Kyle mentions that he records every episode of Family Guy with TVOH!.