I just realized i had a pretty good turkey neck going, and when i was fucking my balls get all bunched up at the base of my dick, so i cant even plunge it in all the way, cuz the balls cover up about a half an inch on the bottom of my shaft. in my observation, it comes from stretching and jelqing, when u stretch ur penis grows, and so does the skin on the top of the penis, or it pulls a little skin from ur pubic area onto it, thats y i got like an inch of god damn pubes around my shaft now. and the underside of my shaft isnt really penis skin, its just ballsack that got pulled up onto the shaft as my penis grew. and as far as jelqing goes, watch ur ballsack when ur coming up with each hand, i shave it all so i cant really feel it, but its being pulled up each time so the skin on the bottom of ur dick isnt being stretched at all. now i only jelq with my right hand n i do the ball stretches red talked about with my left hand simultaneously. and it hurts alot but i figure itll stretch the skin out more, i also do this while doing regular stretches, and holds. i also do about 5 minutes of straight up ball stretches, and afterwards my erect dick looks longer cuz my freakin balls arent hugging the base like a huge fat pad on the bottom.