YOU SAID:

i farted on your mother

INTO JAPANESE

私はあなたの母親に放屁した

BACK INTO ENGLISH

I farted to your mother.

INTO JAPANESE

お母さんにオナニーした

BACK INTO ENGLISH

I masturbated to your mother.

INTO JAPANESE

お母さんにオナニーした

BACK INTO ENGLISH

I masturbated to your mother.