YOU SAID:

I want to fart on someone's face

INTO JAPANESE

誰かの顔におならをしたいのですが

BACK INTO ENGLISH

want to fart on someone's face

INTO JAPANESE

誰かの顔におならをします

BACK INTO ENGLISH

the fart on someone's face

INTO JAPANESE

誰かの顔におなら

BACK INTO ENGLISH

fart in the face of someone

INTO JAPANESE

誰かの顔におなら

BACK INTO ENGLISH

fart in the face of someone