YOU SAID:

I am so excited for pooping i can not wait

INTO JAPANESE

うんちをするのが待ちきれないほど興奮しています

BACK INTO ENGLISH

I'm so excited I can't wait to poop

INTO JAPANESE

興奮しすぎてうんちするのが待ちきれない

BACK INTO ENGLISH

I'm so excited I can't wait to poop