Someone who bites, chomps, munches continuosly on a males cock. Therefore, leaving a ton of scars, bruises and even holes for that sake.
Also a person who bites on ones cock when is in the state of errection. In doing this the female (or male, :S) May
also intend to suck the males balls for that sake.
Mary is such a boner biter, when I saw Chads dick and balls in the changeroom I knew it was the work of her boner biting.