I... I know! -san is an honorific! I am referring to you politely! [He smiles nervously.] You should always think of yourself as youthful out loud!

[Then he watches as she does that trick with her hair, and it is only then that he realizes how truly gigantic her hair is. He looks on in wonder.]

Your- your hair!! That is so incredible...! [Even coming from a world where ninjas have all sorts of weird powers, he's never seen someone use their hair in such a way.]