[Arya's usually very into polishing her sword, but she's so bored right now from being cooped up that she's fallen into an almost trance-like state, leaning on Nymeria a little bit. She's finally snapped out, though, when she hears Fionna sitting down next to her, chattering exuberantly as usual.

She beams with pride, and straightens up a little bit as she speaks.]

I don't know what you mean by 'it's math', but I stole it. My...foster family were using it as a decoration. They're all stupid, the whole lot of them. Why bother having a sword if you're only gonna stick it up on the wall and never use it?

[Nymeria wakes with a small yawn and nuzzles against Fionna's side.]

I'm going to call it Needle, Fionna. My father said...

Well, he said that all good weapons should have names. And I know Needle's gonna do great things!