i primarily registered here for two reasons. one, i don't really know my length and i don't have a ruler and the other reason is to find about penis health. if you have a good eye for measuring, by all means help me out here. the picture is about 60-70% erection. nudity. as for penis health, is it common for your penis to bend slightly down when erect? i am guessing due to the fact that the penis is bigger thus requiring more blood. when i become fully erect my penis curves slightly down but it has improved drastically with massage.