[Kirkwood]

"The key word is genitals Which have more nerve endings than anywhere else on the body (hence the presence of sexual pleasure). I still think it never happened though."

It is far more complicated than that. Pain is felt specifically along pain fibers. The brain for example is loaded with nerve fibers, but no pain fibers, hence, you can perform surgery of the brain with only a local anesthetic to the scalp, skull, and dura. The most painful stimuli actually occur at the cornea of the eye and dental pain. If I had to choose one of these three, I would take genital pain any day over a stick in the eye or a dentist drilling without an anesthetic.

[SALChamps03]

It is far more complicated than that. Pain is felt specifically along pain fibers. The brain for example is loaded with nerve fibers, but no pain fibers, hence, you can perform surgery of the brain with only a local anesthetic to the scalp, skull, and dura. The most painful stimuli actually occur at the cornea of the eye and dental pain. If I had to choose one of these three, I would take genital pain any day over a stick in the eye or a dentist drilling without an anesthetic. Good point.