"Fonk" is a song performed by Nathaniel Grogan. It is featured in the Season Seven episode, "Krazy Kripples".
Background[]
Jimmy and Timmy travel to Denver with the intention of joining a gang known as the "Crips". They have the impression that the Crips are people who was crippled at birth, when they are actually a street gang. At the Crips' hideout in Denver Meat Packing, the leader assigns them a task to "pop some punk-ass Bloods", which Jimmy interprets as buying them treats at a convenience store. Both Jimmy and Timmy set out on their task, dressed in the Crips' attire.