One of the greatest movies of all time...

Dewey Finn: ...And Therefore E=MC2, oh, Miss Mullins, come in 
Miss Mullins: I'm sorry, to interrupt but Miss. Lemmons said she heard music coming from the classroom. 
Dewey Finn: Music? Uh, music. I haven't heard any music. Uh oh, you know what, Miss Lemmons must be on crack, right kids? 

Dewey Finn: No you're not hardcore! Unless you live hardcore! And the legend of the rent was way hardcore!