Circumcision is the surgical removal of the skin on the tip of the penis. This is commonly done as part of religious beliefs or certain sectors, however there could be medical necessities for it as well, such as the skin on the top being extremely thick and needs to be pulled down or in the event that it is done to avoid sexually transmitted disease. It is fairly simpler in the new born period and can get more complex later on. Also does not affect the reproductive capabilities of the man nor does it affect the sexual intercourse.