My entire life I have had a extra flap of skin on the bottom of penis from end to head, I am uncircumcised & 40 years old, my wife always found it odd. I asked my father and he said I have had this my entire life. However I started some online research and cannot find anything, everyone says a fremelum however it definitely isn t. As I said it s a line of skin, that can be moved left or right freely, with no pain or discomfort.