

It’s a joke. They are pretending they can’t remember the very obvious/absurd/silly/etc thing, so they have to check their notes before finishing the thought.
I think it might have its origin in courtroom dramas having prosecutors being catty with the defense but that’s just a barely informed guess tbh
What kind of music do you like?
Who are your guys?
Fuck, marry, kill: happiness, financial wealth, and self respect.