YOU SAID:
なんでそんなこと言い出すの
INTO JAPANESE
なんでそんなこと言い出すの
BACK INTO ENGLISH
Why are you saying that?
INTO JAPANESE
なぜそんなことを言うのですか?
BACK INTO ENGLISH
Why do you say that?
INTO JAPANESE
なぜそんなことを言うのですか?
BACK INTO ENGLISH
Why do you say that?
That didn't even make that much sense in English.