Yesterday Uu-chan spit up a hairball.

Spit...!?

Is he okay!?

Lots of cats spit up hairballs.

They're just spitting up the hair that they swallow while grooming themselves.

Self censored

Has Nanika-chan spit up anything?

Hmmm

I guess I've never seen it groom itself.

Really!? Do you brush him?

I don't do that either.