Everyone knows that only males have to go through circumcision, but many do not know much about this procedure. Do all men need to be circumcised? When is the foreskin considered as overly long? In fact, there is no medical standard for the length of the foreskin. Generally, it is considered too long if the foreskin covers the tip of the penis over long periods of time. However, this does not mean that all men with this condition need to undergo circumcision. The decision is based on many different factors.