YOU SAID:
why don't we eat snowmen
INTO JAPANESE
雪だるまを食べないの
BACK INTO ENGLISH
Don't you eat a snowman?
INTO JAPANESE
雪だるまを食べないの?
BACK INTO ENGLISH
Aren't you going to eat a snowman?
INTO JAPANESE
雪だるまを食べるつもりはないの?
BACK INTO ENGLISH
Aren't you going to eat a snowman?
That didn't even make that much sense in English.