YOU SAID:

i farted on my sister who pooped on me

INTO JAPANESE

私は私の上にうつ伏せた妹に怒った

BACK INTO ENGLISH

I was angry at the cowering on my sister

INTO JAPANESE

私は私の姉に戦慄で怒っていた

BACK INTO ENGLISH

I was shivering and angry with my sister

INTO JAPANESE

私は妹と震えて怒っていた

BACK INTO ENGLISH

I was angry with trembling with my sister

INTO JAPANESE

私は妹と震えて怒っていた

BACK INTO ENGLISH

I was angry with trembling with my sister