YOU SAID:

uh oh i think i did a poo pee

INTO JAPANESE

ええと、私はうんちおしっこをしたと思う

BACK INTO ENGLISH

Well, I think I did pee pee

INTO JAPANESE

まあ、私はおしっこおしっこをしたと思います

BACK INTO ENGLISH

Well, I think I did pee pee