An awesome-looking sandwich is described by Frankie Pamplemousse in Deja Zhu. She says she saw her dad eating it. She says it was the size of his head, and he says it is "probably the biggest sandwich I ever made".
Although he says "I bumped into the lamp", the flashback clearly shows it is the sandwich that makes contact, making it central to the plot. Chunk steals it from him, causing Mr. Pamplemousse to go full Ross.