A man who isn't afraid of anything. Meaning, he's not afraid of any danger, (death included) not afraid to speak the ugly truth, and isn't afraid to take it in the balls and still stand tall like a proud gentleman should.
Guy 1: "Did you hear, Joe called Leslie an ugly horse face b**ch. Then, she knee kicked him in the balls!"
Guy 2: "Does that guy have a death wish or something?"
Guy 1: "Nope, that Joe is a real soldier
. He even asked her to kick him in the nuts again."