Zoot Suit Riot

Grandma comes downstairs wearing a long cardigan and matching harem pants.

Grandpa: That looks like a zoot suit.
Grandma: What?
Grandpa: A zoot suit?
Grandma: A what?
Grandpa: A ZOOT SUIT!
Grandma: What's a zoot suit?
Grandpa: It looks like that (points).
Grandma: Like what?
Grandpa: A zoot suit! It looks like the outfit you have on!
Grandma: What's a zoot suit?
Grandpa: A suit that zoots wear. Never mind.