Well, it WAS the drive-through...
Reminds me of an episode of the Simpsons in which Krusty the Clown had a promotion for his "Krusty-Oh's" cereal (a take-off on Cheerios). In each box you were challenged to find a jagged metal Krusty Oh that was mixed in with all the other regular oat Krusty Ohs. Woo-hoo! ... D'OH!