Kelso: This chapter just helped me figure out the answer to you and Donna's problem, vis-a-vis your crappy score.
Eric: "Vis-a-vis"?
Kelso: It's a PBS word, Eric. Stay with me here. Yeah, I liken your situation to that of Pavlov's dog. You see, Pavlov was this science guy and every time his dog would ring a bell, Pavlov would eat.
Eric: Are you sure it was the dog who rang the bell?
Kelso: Yeah. I mean, who else would it be?
Eric: Pavlov?
Kelso: Well, that wouldn't be a trick, Eric. I mean, what man can't ring a bell? Anyway, every time that dog would ring that bell, old Pavlov would eat, and then he would drool.