Why does it hurt when you get hit in the testicles?

When a male is hit in the testicles, a male experiences extreme pain, accompanied by several other symptoms. The reason why it is so painful, is because a male's testicles have many nerves on them, which when struck cause pain. Simultaneously, when a male is hit, the abdominal muscles contract, which causes loss of breath, which is often interpreted as the voice becoming higher. Male's also usually double over because of the muscle contraction, to prevent further damage to the testicles. Males also experience the majority of pain not in the testicles, but in the abdominal cavity, this is because the nerves run to the abdominal cavity, from which the testicles descended so it is where the pain runs to. It should also be noted that it is illegal to strike a person in the testicles and is considered sexual harassment. Only under self defense circumstances (rape, murder, molestation, ect.) is it ever okay to strike a person in the testicles, otherwise it is punishable by law.