A "left hand man" is someone who a woman is cheating with. The woman in the song is holding her boyfriend's hand with her right hand. Her left hand is free to hold the singer's hand. Her boyfriend notices and reaches for his gun, so the singer is gone.
A "left hand man" is someone who a woman is cheating with. The woman in the song is holding her boyfriend's hand with her right hand. Her left hand is free to hold the singer's hand. Her boyfriend notices and reaches for his gun, so the singer is gone.