Xander: Can you help me out tonight, please, be my study buddy?
Willow: Well, what's in it for me?
Xander: A shiny nickel!
Willow: Okay. Do you have 'Theories in Trig'? You should check it out.
Xander: Check it out?
Willow: From the library? Where the books live.
Xander: Right, I'm there! See, I wanna change...