Colonel Muska: "She messes up the vegetables in the fields and does not work..." Braids: Slap! Slap!
Reimu's word balloon: "Balse! Balse!"
If you've seen the movie, you know what the last word means. Spoilers:
The cute loli from Laputa, Sheeta, has dark hair and looks a bit like Reimu. The euro-suit (Muska) is a loli-con and wants to marry her so that he can use the castle's powers to rule the world. Balse is the last word of the spell (or code-phrase, since it's really all ancient technology) which she uses at the end. It's the self-destruct code for the castle.