Dean and Castiel in “Unfinished Business”

Dean

So, Cas, what's, uh, what's, uh, what’s the word?

Castiel

Well, Dean, I've been thinking. Monkeys are so... clever, and they're sensible in that they leave the skins on the bananas that they eat. Is it really necessary to test cosmetics on them? I mean, how important is lipstick to you, Dean?

Dean

Not very. You want to come inside and, uh, tell us what's going on?