YOU SAID:
If you fack someone he will fack you
INTO JAPANESE
あなたが誰かをだますなら、彼はあなたをだますでしょう
BACK INTO ENGLISH
If you fool someone, he will fool you
INTO JAPANESE
あなたが誰かをだますなら、彼はあなたをだますでしょう
BACK INTO ENGLISH
If you fool someone, he will fool you
You've done this before, haven't you.