YOU SAID:
pizza isn't pizza, or is it?
INTO JAPANESE
ピザはピザではないですか?
BACK INTO ENGLISH
Is not pizza a pizza?
INTO JAPANESE
ピザではありませんか?
BACK INTO ENGLISH
Is not it a pizza?
INTO JAPANESE
ピザじゃないの?
BACK INTO ENGLISH
Is not it a pizza?
You've done this before, haven't you.