The act of showing your love for someone with your fists. Usually done to a relative or a significant other, especially a redheaded stepchild.
Guy 1: How is the relationship with your wife?
Guy 2: Not so good, she keeps bitching at me for giving her
redheaded son knuckle kisses.
Guy 2: Not so good, she keeps bitching at me for giving her
redheaded son knuckle kisses.
by Beffy J January 31, 2008
To kiss one's fist and immediately or reluctantly punch someone you feel affection for or someone meaningful towards you. Sometimes leading them to bleed.
Me : A girl from my class kissed her fist and punched me.
Friend : That's a bloody knuckle kiss man, be lucky she only gave you a bloody nose.
Friend : That's a bloody knuckle kiss man, be lucky she only gave you a bloody nose.
by Mellow Merc December 14, 2018