Other mistake: When Josh and Cher are driving home from a party, they show a shot of the car. It's a blue sports car that passes a Hertz car rental sign. When Elton is driving Cher home from the party in the Valley, they show the exact same shot of the blue sports car passing the Hertz car rental sign.
Cher: Okay, so you're probably going, "Is this like a Noxzema commercial or what?" But seriously, I actually have a way normal life for a teenage girl.
Mel: You mean to tell me that you argued your way from a C+ to an A-?
Cher: Totally based on my powers of persuasion, you proud?
Mel: Honey, I couldn't be happier than if they were based on real grades.