Continuity mistake: In the scene where Alan flirts with the store clerk, they share a lollipop. You can hear a "crunch" indicating that she chewed the lollipop. In the next shot, she takes the lollipop out of her mouth and it is still completely intact. (00:59:45)
Continuity mistake: After his karaoke Chow puts his knife on the right side of Stu's neck, but for the rest of the movie we see the wound on the left side of it. (00:34:05 - 00:38:25)
Continuity mistake: When the giraffe's head is cut off, it spins backwards through the air. When the head crashes in the family car's windshield, it lands right-side up, when it should have landed upside-down.
Continuity mistake: In the bar in Tijuana, when Chow stabs the knife into the table, we see the erect knife aligned with a green bowl located behind it, as well as four beer bottles grouped close together to the right of the green bowl. Then, the camera changes into another wide shot showing the view from the opposite side of the table; where we see that the knife is no longer aligned with the green bowl, it has moved closer to Phil, and the four beer bottles have also moved to different positions. (00:32:00 - 00:33:00)
Continuity mistake: The scene where Stu is in the pharmacy trying to get the prescription filled, he was wearing a blue shirt. When he got back in the car, his shirt is pink.
Suggested correction: The shirt is pink in the pharmacy, it just looks blue due to the light.
Continuity mistake: Just after the giraffe's head comes off, there is a shot looking in the rear view mirror of Alan's car and the trailer he was towing has disappeared, then returns in the next shot. (00:05:15)
