Early in the film Pulp Fiction, Jules (Samuel L. Jackson) notices a hamburger that Brett (Frank Whaley) is eating. Jules asks if he can have a bite, and a terrified Brett says that he can.
When Jules picks up the burger, it’s whole:
But when he brings it to his mouth, it’s nearly halfway eaten:
Stupid, I know. But it’s one of those things that, after you notice it, is impossible to unsee.