The worst kind of ball pain is when something just catches one. Like a powerful near-miss. A flick to the bollock by a strong forefingered assailant is much more excruciating than a knee to the balls. The stabbing agony in the bollock itself, spreading to a dull pain the stomach and then the weird feeling in the throat like when you crack your tailbone ("oh man, I'm going to throw up, I'm going to throw up....wait no I'm not").