"Poop"

I teach Maya to say "kupa" ("poop" in polish), to tell me when she`s pooped. She usually shows with her fingers there`s something.
Me: Ku ku ku
Maya: ku ku kuuu
Me: Pa pa pa
Maya: Pa pa pa pa paaaa
Me: Ku
Maya: Ku
Me: Pa
Maya: Pa
Me: Ku-Pa
Maya: Koi koi koi koi