The sensation of a hypersensitive glans can best be compared to touching the white of the eye. It is an unpleasant feeling and the reflex is to stop immediately. Many young men suffer from this. It makes discovering the sensation in the glans very difficult because a single touch is already too much. In some men it is so strong that even touching the navel is very uncomfortable. Glans hypersensitivity, but also navel hypersensitivity can get in the way of having fun with a penis. Especially with young men. The problem also occurs later in life, when a man has always tried to expose his glans as little as possible.
In the ideal penis, the foreskin pulls back on its own when it becomes stiff. By which the glans gets used to the outside world by itself. However, this is not the case with most penises.