My skin has stretched over the years, even the frenulum has become elongated. I have to be careful with the harsh jerking as there is a small cut in my frenulum which occurred during a bdsm session some twenty years ago or so. When I too was younger, I loved the painful tension of the tight shaft skin being stretched and pulled away from the glans. Now the skin has been overstretched thus creating a deeper sulcus groove. One day, I am sure, the skin will split snd tear along the line where the inner foreskin joins the glans. I would like to know if that join line has an actual name.