Dean and Sam in “Unfinished Business”

Dean

And the lunar cycles?

Sam

Uh-huh. Yeah, month after month all the murders happen in the week leading up to the full moon.

Dean

Which is this week, right?

Sam

Hence the lawyer.

Dean

Awesome.

Sam

Dean, could you be a bigger geek about this?

Dean

I'm sorry man, but what about a human by day, a freak animal killing machine by moonlight don't you understand? I mean, werewolves are badass. We haven't seen one since we were kids.

Sam

Okay, Sparky. And you know what? After we kill it, we can go to Disneyland!