Continuity mistake: During the Delta Rush Party, Pinto (then just a pledge) got a beer. Notice that, as the scene changes camera angles, the heads on the beers go up, down, and up again. (00:07:30)
Continuity mistake: When Flounder and Larry arrive at the Omega house for the party, sunlight can be seen coming through the windows, although it was night when they arrive. (00:03:00)
Continuity mistake: In the scene where Pinto is making out with the Mayor's daughter, as she sits up on him so she can unhook her bra, he starts to slide his hands under her bra right before she passes out and falls over. As she is falling he pulls the tissue paper out which hangs like streamers from his hands to elbows. After a quick shot to show her on the bed, there is a shot of Pinto now holding the tissue in little tiny balls in each hand. (00:58:05)
Visible crew/equipment: Look at the blank wall just in front of D-Day when he rides his motorcycle up the stairs of the frat house - it has the most obvious boom shadow you will ever see in a film. (00:09:15)
Revealing mistake: In the parade scene, not only are people wearing long hair and bellbottoms, but late '70s vehicles can be seen passing or parked in the background. Also in one shot, behind the marching ROTC, a camera rig can be seen in front of spectators photographing the parade.
Continuity mistake: In the cafeteria, Bloto puts stuff on his tray. Before the cut his bunch of bananas are on the side of the tray. After the cut the bunch is on the other side. (00:33:05)
Revealing mistake: When Bluto uses the banner to jump from the building, you can plainly see that his weight is being supported by a safety rope and NOT the banner itself, which is actually slack during the stunt. (01:48:25)
Continuity mistake: When Stork and his associate step conspicuously onto the curb to watch the parade the pompom's yellow tassels face front. When the man behind them says, "Excuse me, my kid can't see," the purple tassels face front. (01:33:05)
Revealing mistake: After the Deathmobile ramming, when all the grandstand participants are in the heap of broken two by fours, you can see several chainsaw gashes in the structure made by the crew in order to pre-weaken the grandstand and facilitate its collapse.
Factual error: Bluto crushes a beer can against his forehead. Steel cans are too strong to crush like that. Aluminium cans weren't introduced until approximately 1965, although the movie was set in 1962. http://www.cancentral.com/brochure/historyTimeline_f.htm. (00:07:55 - 01:20:20)
Suggested correction: Maybe it's a joke about his thick skull/him being impervious to pain due to his stupidity/drunkenness? We also see him break bottles against his head with similar indifference and abandon.
Continuity mistake: In the classroom scene, Donald Sutherland takes a bite of the apple and a split second later in the next shot, he has nothing in his mouth. (00:18:05)
Continuity mistake: When they are getting the girls from the other college, when the first girl comes down the stairs her broach is on the left of her top. When she is sitting down, the broach has moved to her right. It changes back to her left again after this shot and for the rest of the film. (01:10:20)
Factual error: The bottle of Jack Daniels that Bluto chugs has an aluminum twist-off cap - a convenience not yet available in 1962.
Other mistake: In the Disciplinary/Probation Hearing scene, the State Flag behind the Council is that of Tennessee. On the Double Secret probabtion edition, narrator John Landis says "Faber College in Pennsylvania". (01:01:00 - 01:06:00)
Continuity mistake: The scene where Flounder tosses the box of marbles into the street to trip the ROTC cadets during the parade. Look at the background parade audience as they go into fast forward along with the action of the marbles... (01:38:30)
Continuity mistake: When one of the Delta Frat Guys is drinking beer in the frat, in his close up he is holding a mug by the handle, in the reverse shot he is not holding the handle. (00:07:30)
Continuity mistake: During the parade, we see Nedermeyer leading the ROTC cadets, who are carrying M1 rifles. Later, during the riot, we see Nedermeyer take an M1903 rifle off a cadet and use it to shoot at Flounder. (01:35:50 - 01:43:05)
Factual error: The Coca-Cola sign on the pop dispenser in the cafeteria has the "Dynamic Ribbon" device as part of the Coca-Cola trademark. The movie is set in 1962. Coca-Cola didn't start using the Dynamic Ribbon on its trademark until 1970.
Revealing mistake: In the scene where Babs is writing down what is said during the Fraternity's disciplinary hearing, (Court reporting) no ink is actually coming out of her pen as she writes on her notepad. That is, the notepad remains blank even as she turns to a new page while writing. (01:04:50 - 01:05:55)
Continuity mistake: During the parade scene at the end of the movie, there are shots of the street that it will take place on, and there is a view of a (misspelled) "Homestead Ferniture" store in two different shots. When the parade is actually taking place, the store is changed to (correctly spelled) "Homestead Furniture". Several shots after that, it changes back to "Homestead Ferniture" (01:33:20 - 01:44:00)
