Sure you can't. How about, "Open your mouth and if you bite me I'll rip your ears off."
Since Ben Stein is so dammed sure, I’m certain he’ll agree to be ass raped if he is wrong.
Step on up Ben.
“How about, “Open your mouth and if you bite me I’ll rip your ears off.””
Likewise, a woman in that “position” is extremely vulnerable. Even without such a verbal threat, actually biting the guy would be extremely dangerous, as she could be badly kneed in the head, get her hair ripped out or even stomped on by an enraged fiend.