Only if I was hungry. Just kidding.
Anyways, you folks know it's possible to bite without drawing blood. You can just bite enough to cause pain without taking a chunk out. Especially if you don't use the incisors or canines (bicuspids?!).
Actually this got me thinking about another unorthodox method that I've *never* heard anyone really go into.
Tickling. Any thoughts on this? Is it just too weird? It's much less likely to draw blood and give anybody HIV/AIDS.
I can imagine watching a UFC, seeing someone getting mounted, and they cover their face with one arm, and tickle the opponent's stomach to distract with the other so they can bridge to buck them off.
I think you're just shooting out ideas for fun with the tickling comment. But in answer to your question: Do you really think in a full on self-defense scenario someone would actually feel a tickle with the affects of the adrenaline dump and everything else that is happening? This is presuming you can get access to bare skin and then that you have access to a ticklish spot on the attacker which varies person to person.