The Gimp is a man they keep dressed from head to toe in black leather bondage gear. There are zippers, buckles and studs here and there on the body. On his head is a black leather mask with two eye holes and a zipper (closed) for a mouth. They keep him in a hole in the floor big enough for a large dog.
ZED: Bring out The Gimp.
MAYNARD:I think The Gimp's sleepin'.
ZED: Well, I guess you'll just have to go wake him up now, won't you?