Visible crew/equipment: When Ferris, Sloan, and Cameron pick up the Ferrari at the parking garage you can see the camera and its reflection in the window directly behind Ferris and Cameron.
Ferris Bueller's Day Off (1986)
Plot summary
Directed by: John Hughes
Starring: Matthew Broderick, Jeffrey Jones, Mia Sara, Alan Ruck, Jennifer Grey
Ferris Bueller fakes sick to his parents to get a day off school. His best friend, who is home 'sick', helps Ferris get his girlfriend out of school and they have a day in the city.
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Ferris: Cameron has never been in love - at least, nobody's ever been in love with him. If things don't change for him, he's gonna marry the first girl he lays, and she's gonna treat him like shit, because she will have given him what he has built up in his mind as the end-all, be-all of human existence. She won't respect him, 'cause you can't respect somebody who kisses your ass. It just doesn't work.
Trivia: Charlie Sheen stayed awake for 2 days to play the guy in the police station, so he could get the right look for the scene.
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Answer: Sloane knew it was a hoax. Ferris would not have done something like that without her knowing. Rooney pretty much had figured it out, but could never prove anything. Once he was discovered inside the Bueller house (illegally) by Ferris' sister, anything he did know he would have to keep to himself.
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Sloane starts to put her jacket on the moment that she sees the school nurse walk into the classroom, suggesting that Sloane already knew she would be called out, and she smiles to her classmates.