A penis fracture occurs when there is trauma to the erect penis. This can occur from unsafe maneuvers during anal or coital intercourse, from incorrect manipulation during masturbation :wank: , or by hitting the erect penis into something hard :hitit:. The resulting fracture causes a rupture of the lining of the cylinder (corpus cavernosum) in the penis that becomes engorged with blood during the erection. This very painful injury is often accompanied by an audible cracking sound, followed immediately by dark bruising of the penis due to blood escaping the cylinder. If this occurs one should see a physician immediately or else there is the strong possibility of erectile dysfunction, permanent penile curvature, damage to the urethra, and pain during sexual intercourse. So take care guys, when fucking or jerking off, don't bend it in the wrong direction and don't bump into anything solid when you've got a hard on.