Actually, this was before I ever learned any martial arts- it caught me off guard because I wasn't even fighting, it was just a high school girl, and she was mad at me, so she kicked me in the juevos.
If you want to stop a fight with a woman, punch her in the face. If you want to stop a fight with a man, punch him in the throat- guys just get mad when you punch them in the face, but punching them in the throat reminds them that they have weaknesses, no matter how much training they've had.
At least, that's been my experience.
-kv