YOU SAID:

brother what are u doing with my knife to your neck

INTO JAPANESE

兄弟、私のナイフを首につけて何をしているのですか?

BACK INTO ENGLISH

Brother, what are you doing with my knife around your neck?

INTO JAPANESE

兄さん、私のナイフを首に巻いて何をしているの?

BACK INTO ENGLISH

Brother, what are you doing with my knife around your neck?