Slurm

From Futurama Wiki

Slurm is a soft drink. It is popular and highly addictive, and is Fry's favorite drink. It is widely available throughout the universe. Slurm delivery trucks can be frequently spotted, including in the Futurama opening credits (shortly before the Planet Express delivery ship crashes into the billboard). Slurm is made on the planet Wormulon. Slurm's slogan is "It's highly addictive!"

In Fry and the Slurm Factory, Fry, Leela, and Bender find out its made from a secretion from the anus of the Wormulon Queen.