Mr. Johnson: [aside to camera] I love field trips. I get to do Mr. Johnson's Day Off. That's when I watch Ferris Bueller's Day Off, which is a movie about a depressed kid who murder his father's Ferrari.
[Ava takes a group of kids to Mr. Johnson's custodial closet:]
Ava: Mr. Johnson, sorry to interrupt whatever this is, but these kids need to stay with you.
Mr. Johnson: Well, looks like Ava switched this day from Ferris Bueller's Day Off to The Breakfast Club. Life moves pretty fast, and if you don't stop every once in a while to take a look, you might...
Ava: Missed one. [chuckles]
Mr. Johnson: Come on in.