History YMMV / FerrisBuellersDayOff

* UnintentionalPeriodPiece: The film is a time capsule for the 1980s.
** The cars, fashion, and the lack of people using laptops or smartphones date this movie to an earlier time period. The computer in Rooney's office had really outdated graphics.
** With school security becoming more pronounced since the late 90s, Ferris' hooky would be a lot harder to pull off then today.

* CommonKnowledge: A lot of people, even on this website, are under the impression that the two parking attendants who took Cameron's dad's Ferrari for a joyride racked up a comically large millage of over 2,000 miles, justifying Cameron's massive FreakOut. In actuality, the odometer started at 125, and ended at 301, so they only added 176 miles.

** A fairly popular theory is that Ferris, who is very much an EscapistCharacter, is actually a figment of Cameron's imagination, like a less destructive [[Film/FightClub Tyler Durden]], that Cameron created as a way to force himself to steal his dad's car and have fun. Part of the theory that changes depending on who you ask is that either Sloane is also imaginary, or is real but goes along with Cameron's delusions so she can have a good time. For this to work though, not only would Jeanie and Bueller's parents, who never have any interaction with Cameron, have to be imaginary as well, but Ed Rooney, his secretary, and the economics professor would have to be, if not imaginary too, having imaginary days that have nothing to do with Cameron at all, and that just brings up the question of why Cameron's illusion includes such an elaborate B-plot, complete with a third act climax that occurs after Cameron has completely left the story.

** A fairly popular theory is that Ferris, who is very much an EscapistCharacter, is actually a figment of Cameron's imagination, like a less destructive [[Film/FightClub Tyler Durden]], that Cameron created as a way to force himself to steal his dad's car and have fun. Part of the theory that changes depending on who you ask is that either Sloane is also imaginary, or is real but goes along with Cameron's delusions so she can have a good time. For this to work though, not only would Jeanie and Bueller's parents, who never have any interaction with Cameron, have to be imaginary as well, but Ed Rooney, his secretary, and the economics professor would have to be, if not imaginary too, having imaginary days that have nothing to do with Cameron at all, and that just brings up the question of why Cameron's illusion includes such an elaborate B-plot, complete with a third act climax that occurs after Cameron has left the story.

** Among those who view Ferris in a more negative light, it's common to portray Principal Rooney as a noble educator trying to stop a delinquent. This ignores that Rooney goes ''way'' too far in trying to do so, to the point of committing serious crimes like breaking and entering, and that his mission to catch Ferris is motivated far more by petty hatred and his wounded ego than any real concern for the rules or students, practically salivating at the prospect of holding Ferris back another year and making his life hell all the while.

** A fairly popular theory is that Ferris, who is very much an EscapistCharacter, is actually a figment of Cameron's imagination, like a less destructive [[Film/FightClub Tyler Durden]], that Cameron created as a way to force himself to steal his dad's car and have fun. Part of the theory that changes depending on who you ask is that either Sloane is also imaginary, or is real but goes along with Cameron's delusions so she can have a good time. For this to work though, not only would Jeanie and Bueller's parents have to be imaginary as well, but Ed Rooney, his secretary, and the economics professor would have to be, if not imaginary too, having imaginary days that have nothing to do with Cameron at all, and that just brings up the question of why Cameron's illusion includes such an elaborate B-plot, complete with a third act climax that occurs after Cameron has left the story.