YOU SAID:

pooping on my nans car

INTO JAPANESE

ナンズの車にうんこをつけている

BACK INTO ENGLISH

is putting poop on the Nans' car

INTO JAPANESE

南さんの車にうんこを乗せている

BACK INTO ENGLISH

is putting poop in Mr. Nan's car

INTO JAPANESE

楠さんの車にうんこを入れている

BACK INTO ENGLISH

is putting poop in Nan's car

INTO JAPANESE

ナンの車にうんこを入れている

BACK INTO ENGLISH

is putting poop in Nan's car