Bart becomes a graffiti artist after Homer punishes him for a prank he didn't play. Meanwhile, Apu faces competition against a health-food store.

!! Tropes:

* IResembleThatRemark: Nelson criticizing Apu for selling cigarettes to kids as he takes a puff from a cigarette
* LoopholeAbuse: Too keep Lisa from denouncing him as a graffiti artist, Bart had to promise to write "Fur is Murder". He only wrote it once and added a question mark.