Deliberate mistake: Both in the first scene and last scene of the movie, we see Yolanda and Ringo starting the robbery by jumping from their seat and start threatening the costumers. In the first scene, Yolanda says "And I'll execute every motherfucking last one of you." But in the last scene the line changes to "and I'll execute every one of you motherfuckers". (00:04:40 - 02:18:00)Amitai Assido
Continuity mistake: At the beginning, when Brett is initially shot by both Jules and Vincent after Jules' Ezekiel speech, we see Jules' gun becomes empty on firing the last shot. However, on returning to the same scene at the end, when Jules and Vincent shoot Brett the gun does not empty; in fact Jules is able to repeatedly shoot the guy who comes out of the bathroom afterwards and the gun still isn't empty.
Continuity mistake: Lance is sitting at home eating cereal and watching the end of a Three Stooges short, "Brideless Groom," on television. During the subsequent phone conversation between Lance and Vincent, we can hear the short's soundtrack continuing in the background. The soundtrack then abruptly changes to an earlier scene in the short (Christine McIntyre slapping Shemp around) and then to a different short altogether ("Sing a Song of Six Pants," with Harold Brauer talking about a safe combination).
Continuity mistake: Towards the end of the movie in the coffee shop scene, we see Samuel L. Jackson holding up his wallet, waiting to deposit it into the bag, it is very apparent that there is no writing on this wallet, it is a fat, and barely able to stay folded, yet when Ringo is instructed to retrieve this wallet, the one he brings out is now the one that says "Bad Motherfu**er", it is very slim, and a darker brown.
Deliberate mistake: Jules' famous Ezekiel quote is actually an expansion of what is in the Bible. Ezekiel 25-17 actually reads: "And I will execute great vengeance upon them with furious rebukes; and they shall know that I am the Lord, when I shall lay my vengeance upon them." (00:20:10 - 00:22:25)
Continuity mistake: When Vincent and Jules are at Brett's apartment at the beginning of the movie, Jules takes the hamburger from Brett's table after he asks to taste it. The hamburger in the first shot simply contains cheese and ketchup, but when Jules bites it there is only a leaf of lettuce. Moreover, the hamburger appears first intact, but in the next shot it appears already bitten.