Why are guys penises so sensitive?
Guys always try to protect their groin in any situation where they could get hurt because their testicles are extremely sensitive to pain. This is probably nature’s way of protecting the sperm-bearing testicles from serious injury that could affect fertility. The skin over the penis is very sensitive to touch to trigger the muscle contractions necessary to achieve erection (when muscles at the base of the penis contract, they prevent blood from escaping from the blood channels of the penis resulting in an erection). Continued stimulation to the skin of the penis triggers the nerve reflex that leads to ejaculation. The penis is not overly sensitive to pain.
