Penis

A reproductive and sex organ that is made of spongy tissue that fills with blood during sexual excitement and becomes hard (also known as an erection). Penises are found on the bodies of those assigned male at birth. Urine and semen pass through the penis through a tube called the urethra. The average length of an adult erect penis can be anywhere from five to seven inches—although some are smaller and some larger. Beneath the shaft of the penis is the scrotum and inside the scrotum, the testicles.