This episode has one of my favourite Seinfeld scenes of all time. It's when Elaine is ordering a soda and a popcorn.
Elaine: Uh, could I have a medium Diet Coke?
Clerk: Do you want the Medium size or the middle size?
Elaine: What's the difference?
Clerk: Well, we have three sizes. Medium, Large, and Jumbo.
Elaine: What happened to the small?
Clerk: There is no small. Small is Medium.
Elaine: What's... medium?
Clerk: Medium is Large, and large is Jumbo.
Elaine: Oh-kay. Gimme the large.
Clerk: That's medium.
Elaine: Right. Yeah. Could I have a small popcorn?
Clerk: There is no small. Child-size is small.
Elaine: What's `medium'?
Clerk: Adult.
Elaine: Do adults ever order the child-size?
Clerk: Not usually.
Elaine: Okay, gimme the `adult'.
Clerk: Do you want butter?
Elaine: Is it real butter?
Clerk: It's butter-flavored!
Elaine: What is it made of?
Clerk: It's yellow!
