Being in the medical field, I agree with the above opinions about the time it takes for nerve damage to heal. Bottom line is if you disturbed blood supply to nerves it is going to cause damage. The extent of damage depends on the length of time the nerves were without a blood supply. The other way that nerves can be damaged is direct insult as in pressure or laceration. Without indication of severe trauma (as in being hit with a heavy object or cut off) there is a excellent chance that the nerves will heal. Word of caution to all of you penis pullers out there is damage can happen…..go it slow.