Quote from Axl in The Carpool
Axl: I need your book. Got to study up on my astronomy. Studying up for study group! Hutch: Okay, I get why you're doing this. That Zoe is a hot-tay! But, hey, I' m actually in the class. Nobody invited me. That's coldcold as ice! Axl: Well, maybe if you paid a little bit more attention during Hot Tub Time Machine, you would have been invited. Now, let's say we learn me some astronomy. And just to confirm, that is the planet one and not the horoscope one, right?