Goofs

When Harold comes into the apartment building and gets his mail, his mailbox number is 426. Later when they leave their apartment to go to White Castle, their apartment number is 422.

When Harold first meets Maria at the elevator, the floor indicator on top shows that the lowest floor is "G," and it is the lobby floor. However, at the end of the film, when Harold presses the button inside the elevator (to go to the lobby floor), the button is labeled "1," and there is a "B" (presumably lower than the lobby) right next to it.

When Harold and Kumar board the hang glider, it is early morning. However, subsequent shots to the police car that is (still) chasing them show the car driving through the forest at night.

The blood stain on Harold's shirt disappears for a few shots after the raccoon scene, when they almost collide with the car on the road.

When the extreme punks are in the store, and Neil Patrick Harris steals Harold's car. Harold and Kumar look around the parking lot, the extreme Ford truck is missing, even though the punks are still in the store.

The cheetah roars during the film. Cheetahs cannot roar, they can only purr, hiss, and growl.

When Harold closes the door to their apartment it shows 422 but earlier Harold was getting mail out of box 426.

When Harold and Kumar stop the Bronco just in front of the cliff, only the left front wheel is hanging over the cliff. When they try to back up, that wheel rolls freely as if they can't back up. That front wheel rolling clearly shows the vehicle is in 4 wheel drive, and even if it wasn't, all Ford trucks are rear wheel drive by default, meaning with three wheels still on solid ground, the Bronco should have backed up with ease.

Towards the end of the movie, Harold & Kumar order 30 sliders, 5 fries, and 4 large cherry cokes (4 diet cokes for Kumar); however, when you see Harold drinking from his cup, it is a medium size shown, not a large. The large cups are plastic, not paper, and have a narrower base that widens into the body.

The slider special (as shown on the TV commercial at the beginning) is $2.99 for 6 burgers, fries and a drink. If they ordered 5 specials each, their bill should be just under $30 before tax, and yet they are charged almost $50. However, in the finale they order separate items (30 burgers, 5 fries, and 4 drinks each). Unless the server converted that order into specials (8 specials, plus 10 burgers and 2 fries), they would not get the cheaper price.

Throughout the movie you can clearly see Harold's laptop bag fold in the middle showing there is no laptop in the bag. Particularly visible at the gas station.

The wire that is holding the hang glider is visible in several shots, especially when Harold and Kumar hit the tree.

When Harold almost drives the Extreme 4x4 off the cliff, a metal structure can be seen holding the car up. Later in the wide shot when the police arrive, the same metal support can be seen.

At about 5 minutes and 31 seconds. Harold is cut off from his parking spot by some guys in a Jeep (the "Extremes," in their first appearance). The driver and front seat passenger yell racist remarks at him and laugh, and the driver gives Harold the finger. Harold turns away from them, putting his car in gear. He is HEARD to say, "Fucking assholes," but his jaw NEVER MOVES.

When Kumar stops the car to urinate in the bushes. As raccoon climbs in the back seat of car, the puppeteers hand and the puppet stick is clearly visible between the front seats.

While the geography of New Jersey in the movie is very accurate during Harold and Kumar's journey from north Jersey to south Jersey, there is simply no need for them to have driven so far to find a White Castle. The trip from Hoboken to Cherry Hill is 85 miles and takes about 2 hours (without traffic), and there about 20 White Castles along the way. In fact, Harold and Kumar didn't even have to get on a highway to find one; there is a White Castle on Kennedy Boulevard in Jersey City, which is adjacent to Hoboken.

When Harold and Kumar are arguing outside the gas station, a sign that says "Self Server" can be seen in the background of the shot by the pumps. New Jersey does not allow self service at gas stations, only full service.

When passing the multiplex in New Brunswick, there is a sign for Scotiabank under the Cineplex Odeon sign. Scotiabank is a Canadian bank with no branches in NJ.

When Harold and Kumar are looking through the window of the Hot Dog heaven, a cup on the table says "Licks". Licks is a Canadian burger chain.

Contrary to the plot of the movie, there is no White Castle located in Cherry Hill, New Jersey. When the film was written, there was a White Castle in Pennsauken, NJ (a nearby town). Currently, the nearest White Castle is in Jersey City, New Jersey, which is actually about 15 minutes from where the movie begins. The nearest White Castle to Cherry Hill is in Toms River, NJ.

Harold insists on going to the ER to find out if he has rabies. You cannot find out that soon after an attack, and usually you have to take the potentially rabid animal in with you, because they dissect the brain to determine if an animal is rabid.

About halfway through, Freakshow invites the pair to have sex with his wife while he fixes their car. Then he says, "Just don't do anything the good Lord wouldn't do." But if the Lord followed His own rules, He wouldn't 'covet his neighbor's wife,' so Freakshow's second comment contradicts his invitation.