An aging musician considered by most well past his time, who spends most of his timing singing songs involving various kinds of burgers in paradise. Eric Cartman is especially not a fan of his music. Jimmy Buffett would just love it if no one could ever call his music "drunken frat boy monkey garbage" again. He stops in town to do music for AIDS benefits and provide some additional vocals to songs about queefing. He also joins Tom Cruise and Rob Reiner's class action lawsuit.
- In early versions of multiple episodes, most notably "Margaritaville", Jimmy and Warren Buffett were to show up as a pair of brothers working together on an evil scheme to control the world economy. The idea was ultimately ditched in the final version of the aforementioned episode.