The external organs include the penis, the scrotum, and the testicles (or testes). The scrotum is a loose sac of skin behind the penis which contains the testicles. In boys, puberty begins with the enlargement of the testicles and scrotum. Fish reproductive organs include testicles and ovaries. The scrotum is located high in the perineum with the testicles in separate sacs. The testicles (male gonads), are where sperm and male hormones are produced. If the victim was a boy he would touch his genitals (particularly testicles) and buttocks. Sexual planaria are hermaphrodites, possessing both testicles and ovaries. The procedure was reportedly very painful as both the testicles and penis were removed. Testicular torsion is also more likely in retained testicles. Among the many homologies in mammal reproductive systems, ovaries and testicles are homologous. He also has a spaceship that resembles a penis and two testicles. Masses in breasts or testicles may produce observable lumps. They commenced savagely kicking the seated men in the abdomen and testicles. The marriage produced no children, possibly due to Francis' illnesses or his undescended testicles.