Cartman originally makes burgers in an attempt to give himself Asperger syndrome, having mistaken "Asperger's" as "Ass Burgers". Kyle Broflovski tries one and spreads the word after discovering its delightful flavor. However, the flavor produced is made by Cartman putting the burgers in his underwear.
Cartman later creates a business selling the burger, located in front of his house. Restaurant franchises believe Cartman had invented a superior burger by combining all of their flavors by infusing them into a gas. They send Stan Marsh to obtain the secret recipe. Kyle would not tell Stan the recipe and results in him almost getting shot in the head, scaring all the customers away. The business goes bust after Kyle discovers the shocking secret recipe.