Corrected entry: In the scene where Stifler has "fed" the ring to the dog he is waiting for the dog which swallowed it to go to the toilet to pass it through. When the dog has done this he takes the case from the chocolate cake he is eating to pick up the dogs 'business' and the cake is then lying face down on his plate in the next shot the cake is then the right way up again.
Correction: The only item visible on the plate after he tips the cake over is the grapes. You can't see the cake.
Correction: This is a character choice not a mistake. Stifler being Stifler, he could easily have had some crazy idea for a bachelor party on the middle of Lake Michigan.
Corrected entry: In the opening shot on the morning of the wedding, the sun is rising over what is supposed to be Lake Michigan. Since Grand Traverse County and Michigan in general is on the east side of Lake Michigan, this is not possible.
Correction: Grand Traverse County is landlocked on 3 sides, with only the North side on the water. However, part of that north side is a 1-mile wide peninsula that juts out northward several miles into Grand Traverse Bay. From that peninsula, both sunrises and sunsets would be over the waters of the bay. Please see http://www.nwmcog.org/data/maps/GrandlTraverseCoMap.pdf for a detailed county map.
Corrected entry: A big deal is made throughout the film that Jim can't dance and must learn before the wedding. However in the previous films, (mainly at the final party from American Pie 2) Jim is shown dancing with no problems at all.
Correction: There is a big difference between dancing at a party and formal dancing (like you do at weddings). Jim might be able to dance to a pop tune, but that does not mean he knows waltz.
Corrected entry: When the bride's parents walk in through the door to see the daughter's future husband's parents, the dad walks in on the right, and the mom on the left. The camera shot changes, then goes back to them and they have changed positions.
Correction: No, they don't. They stay in the same position untill they turn around Jim's parents.
Corrected entry: Cadence is already in the hotel when she agrees to meet Stifler in the closet in 10 minutes (second time around), so why is she walking outside a few minutes later when her mother stops her to talk to her about the wedding?
Correction: It's possible that Cadence had an errand to run during the 10 minutes before she was due to meet Stiffler and she had to leave the hotel to do it.
Corrected entry: In the scene where Stifler and Jim are at Jim's engagement party, the engagment cake gets squashed onto Stifler's crotch. A few shots later when Michelle's parents' dog comes running in, he is holding the cake and it is not damaged. Then it gets squashed onto his face.
Correction: Only the corner of the cake gets squashed against his crotch; if you look closely you'll see that most of the cake is still intact. The rest of the cake is squashed onto his face in the next shot.
Corrected entry: At the bachelors party, one of the girls is called "Fräulein Brandy", yet in one scene Finch says to her: "Anything for a French person - if you insist Fräulein." Finch, sophisticated as he is, would know that "Fräulein" is a German word, not a French on
Correction: He's making a joke
Corrected entry: In the scene where Stifler is replacing all the destroyed flowers, he pulls up at the florist's house and there is smoke coming out of the exhaust indicating a cold engine even though he drove for three hours to replace the flowers.
Correction: He could easily have been driving a faulty car with a bad exaust.
Corrected entry: There is no explanation anywhere in this film as to where the other friends went (Oz, Heather, Vicki).
Correction: This is one of many lost stories; Oz and Heather's was one where they were going through trouble. Oz isn't in it because he was doing work in Europe and it wouldn't have been cost effective to fly him over.
Corrected entry: When Michelle's parents first show Kevin, Finch and Stifler the wedding ring, there is a close up of it. It is a gold band with diamonds in it. Later, the ring is shown from a distance. It is now a band with a large diamond setting that bears a striking resemblance to Michelle's engagement ring. Later when Stifler has the ring, it has returned to its original appearance.
Correction: This technically isn't a mistake as the director knew that he was doing it but the wedding ring wasn't sparkly enough so it had to be replaced with the engagement ring. This is explained on the audio commentaries.
Correction: She could have been living with relatives for any number of reasons. I had a friend in high school whose parents lived a state away and she lived with her grandmother.
Corrected entry: When Finch is listening in on the sisters in the toilet, he climbs onto the toilet seat to hear, but when they realise someone is there they look up toward the roof, but Finch should be below them.
Correction: The sound is traveling through the air vents overhead, the bathrooms are next to each other. So the noise would come from over head for the sisters.
Corrected entry: In the very last scene where the two guys are looking in at Stifler's mom in the bathtub and then they see Finch in there with her, the window starts to fog up blocking their view. Wouldn't the window have already fogged up? It's not like it fogged up in the heat of passion.
Correction: A nearby exhaust vent for what is probably a clothes dryer starts putting out steam which condensed on the window, and because they don't want to draw attention to themselves, they can't just wipe off the steam.
Corrected entry: in the bachelor party scene, how the hell can Finch get showered off, completely dried and change clothes in roughly 3 minutes?
Correction: Finch doesn't get showered off.If you look carefully there is still chocolate sauce visible on the left side of his neck near his ear.
Corrected entry: In the scene where Stifler, Finch, Cadence and Kevin are preparing to head north for the wedding, Finch gets in the back seat of Kevin's car to be with Cadence. She then leaves to ride with Stifler. It shows Cadence getting into Stifler's car, and we still see Finch in the back seat of Kevin's. The very next shot is Kevin driving away, and Finch has magically moved to the front seat.
Correction: There is an obvious time difference. In the time that it takes Stifler to get in the car and start it up, Finch could climb into the front seat.