Marty: Should I even ask?

Niles: These balloons come in an unsealed package, covered in some mysterious dust, straight from some southeast Asian sweatshop. Doesn't that worry you?

Marty: Oh, you bet it does. I remember back in Korea, we'd crouch in our foxholes, scared to death those bastards were gonna drop balloons on us.

Edit: having read all the comments I’ve come to realize I’d be really good at trivia as I’m sure most of you would be too.