Stiles Stilinski: I actually think I’ve heard of this… It’s a specific kind of infection.

Scott McCall: Are you serious?

Stiles Stilinski: Yeah. Yeah, I think it’s called lycanthropy.

Scott McCall: What’s that? Is that bad?

Stiles Stilinski: Oh, yeah, it’s the worst. But only once a month.

Scott McCall: Once a month?

Stiles Stilinski: Mm-hmm. On the night of the full moon. (howls)

From Teen Wolf – Season 1 Episode 1: ‘Wolf Moon’ (1×01)