YOU SAID:

I don't know where they're going, but I gotta topee!

INTO JAPANESE

私は彼らがどこへ行くのか分かりませんが、私はおしっこしなければなりません！

BACK INTO ENGLISH

I don't know where they go, but I have to pee!

INTO JAPANESE

どこに行くのかわかりませんが、おしっこしなければなりません！

BACK INTO ENGLISH

I don't know where to go, but I have to pee!

INTO JAPANESE

どこに行けばいいのかわかりませんが、おしっこしなければなりません！

BACK INTO ENGLISH

I don't know where to go, but I have to pee!