Castiel and Dean in “Unfinished Business”

Castiel

This is very complex. If the pizza man truly loves this babysitter, why does he keep slapping her rear? Perhaps she's done something wrong?

Dean

You're watching porn? Why?

Castiel

It was there.

Dean

You don't watch porn in a room full of dudes. And you don't talk about it. Just turn it off! [Castiel looks down at his lap] Now he's got a boner.