Slurms Mackenzie is the mascot for Slurm, a highly addictive drink, and is called The Original Party Worm. In Fry and the Slurm Factory, the Slurm company open a competition where the winner gets to visit the factory and party with Slurms Mackenzie.

Before this, Slurms had been partying for about 40 years, all of those years being with his female companions, Dixie and Babe. Slurms also has to party all night and every night or he'll be fired.