YOU SAID:

I'm a little baby who pees in his diapers.

INTO JAPANESE

私は彼のおむつでおしっこする小さな赤ちゃんです。

BACK INTO ENGLISH

I am a little baby peeing in his diaper.

INTO JAPANESE

私は彼のおむつでおしっこをしている小さな赤ちゃんです。

BACK INTO ENGLISH

I am a little baby peeing in his diaper.