Stiles and Scott in “Unfinished Business”

Stiles

There was a pin. There was one little metal pin attached to the scaffolding. He was trying to pull me down.

Scott

[about Donovan] He was trying to kill you.

Stiles

Yes. And then I pulled the pin, and all these metal braces came down... And one of them just, just went right through him.

Scott

[sadly] Why didn't you think you could tell me?

Stiles

It was just the way you were looking at me that night. You know, you were standing there with a wrench in your hand, and you're looking at me like I just bashed you in the head with it. You know, like I'd broken your sacred rule and that's it. There's no going back.

Scott

I know the difference.

Stiles

What?

Scott

I know what self-defense is.