Ferris Bueller (Mathew Broderick) is a very well know student for being "that guy", the one you ask for a favour if you're a student, and the one you must catch doing something wrong if you're Dean of Students Mr Rooney (Jeffery Jones). On a rather nice day, Ferris does what so many of us have done; he chucks a sickie. And dragging his best friend Cameron (Allan Ruck) and his girlfriend Sloan (Mia Sara) with him on his adventures.
The fourth wall breaks. This is referenced in Deadpool (spoiler) and the end Easter egg may be the first in history (again, spoiler) referenced in Deadpool. The fourth wall is this thing where the character realises they're in a film and talk directly to the audience.
Keep an eye out for Odd things like Bueller's name appearing everywhere, NRVOUS being on the number plate of the Ferrari, and appearances from Charlie Sheen and Jennifer Grey. Trust me, you will spend many hours watching (or cheating on the internet) to find all of the Odd things.
Great fun. Watch this and learn the art of having the best day off from the original Ferris Bueller. Now why don't we have more films like this being made today?