YOU SAID:
Where did i leave my underpants?
INTO JAPANESE
私はどこでパンツを去ったのですか?
BACK INTO ENGLISH
Where did I leave the pants?
INTO JAPANESE
どこでパンツを去ったのですか?
BACK INTO ENGLISH
Where did you leave the pants?
INTO JAPANESE
あなたはどこでズボンを去ったのですか?
BACK INTO ENGLISH
Where did you leave the pants?
You've done this before, haven't you.