YOU SAID:

im pooping and its a big one

INTO JAPANESE

私は口を開いて、それは大きなものです

BACK INTO ENGLISH

I open my mouth and it is big

INTO JAPANESE

私は私の口を開き、それは大きいです

BACK INTO ENGLISH

I open my mouth and it's big

INTO JAPANESE

私は私の口を開き、それは大きい

BACK INTO ENGLISH

I opened my mouth and it is big

INTO JAPANESE

私は口を開けた

BACK INTO ENGLISH

I opened my mouth

INTO JAPANESE

私は口を開けた

BACK INTO ENGLISH

I opened my mouth