"A PE Christmas" is the second Christmas-themed episode of [adult swim]'s animated show Aqua Teen Hunger Force.
Master Shake steals the identities of Flavor Flav and Terminator X so he and Meatwad can record a Christmas album as Public Enemy. Unfortunately, he gets eel diarrhea in the process.
On Christmas day, he gets arrested for breaking into Better Buy in an attempt to find out if the album is selling (it isn't because the store is closed).
In jail, Shake claims he's Flavor Flav, and eels explode from his body, killing him. Meatwad went to Chuck D's place and he liked the album.
At the very end, it's revealed that Shake has been infected by Chuck D.'s pet Space Eels.