TIL Although the penis is not a bone, it can still be fractured. A fracture can occur when the erect penis endures blunt trauma during sexual intercourse or other physical activity. A cracking sound can be heard, followed by pain and swelling that causes the shape of the penis to become distorted. User epicnesshunter, in the Today I Learned (TIL) subreddit, 27 Apr 2014
Emergency surgery on a penile fracture [NSFW][NSFL] User JohnSherlockHolmes, in the WTF?! subreddit, 26 Apr 2012