Continuity: In the scene with the diarrhea twins, when Harold and Kumar go into the middle stall, you can see that all of the doors are closed. When the twins are standing at the mirror in the bathroom, you can see that the door, in the mirror, behind the twin in pink is open.

Continuity: In the shot when Harold and Kumar stop to take a pee and then leave Harold gets bitten by a raccoon and in one shot you see Harold's blood stain on his jacket in the next shot its gone the shot after that one you see it and so forth it happens for about a few shots until the car comes to a stop.

Continuity: When Harold and Kumar almost crash into Goldstein and Rosenberg we see Goldstein's car stop a short distance behind Harold's. Then in the wide shot the car is now much further down the road.