日本語
ponpon
tummy
ぽんぽんが いたい。
My tummy hurts.
When talking with children, "o-" may be added to the beginning of certain words, and repetitive language is often used. e.g. "o-tsumu", "o-meme", "ponpon" and so on.
おへそ
bellybutton
あーんする
to open one's mouth
あんよ
toddling
おくち
mouth
おしまい
that's all