YOU SAID:

I had a big massive poopie

INTO JAPANESE

私は大きな巨大なプーピーを持っていた

BACK INTO ENGLISH

I had a big giant poopy

INTO JAPANESE

私は大きな巨大なうんちを持っていた

BACK INTO ENGLISH

I had a big huge poo

INTO JAPANESE

私は大きな巨大なうんちを持っていた

BACK INTO ENGLISH

I had a big huge poo