Scrappy

Plot hole: Bob and Walt supposedly share a liver, which apparently Bob has three quarters of. This would mean that the liver is in the join between them. All of the rolling around, twisting and banging of this section between them would severely damage their liver, and probably kill them.

Scrappy

Continuity mistake: We see that the join between Bob and Walt is very flexible, and can be twisted and contorted easily. Why is it then that when the brothers are lying in bed and Bob turns on his side to sleep, does Walt move with him. They should in fact be facing away from each other.

Scrappy

Audio problem: At the start of the film we see the twins flipping burgers in their restaurant. We see that while one is throwing the burgers the other is catching them in the buns, and then dusting them with a metal jar of something. After every burger he bangs the jar on the table a few times. One one occasion, he actually bangs the jar on a burger bun, yet the sound effect is still played.

Scrappy