Hi, I am a 23 year old male. I am 8 inches erect but have quite a large downward curvature. (n-shape) It has been this way since I was a young teenager. I have always wondered why this is. I have read from some websites that the bottom and top of the penis do not develop evenly and this can cause a curve. But, when I am flaccid, and I squeeze my cock with my thumb and index finger, the tissue at the base is very thin and flexible, I can almost feel my index finger and thumb touching. As I go down the shaft, the tissue inside my penis gets thicker, heavier and harder than at the base. Can this uneven weight distribution between thin tissue and thick tissue on my penis be causing the down curve? Is it normal for the tissue to get thicker the further down the shaft you go?