The bottle became stuck, "strangling

The bottle became stuck, "strangling" his penis and causing distal edema—or a rapid accumulation of blood in his shaft that caused it to swell to twice its usual erect girth, according to case report in the Indian Journal of Surgery. Fortunately, this guy's penis returned to normal size after doctors cut the bottle away. (They have no idea if the man suffered any long-term effects because they never heard from him again—presumably because he was too embarrassed to answer their follow-up calls.)

Here are a few other ways men have compromised the health of their manhood while masturbating. For safe ways to spice up solo sessions, try our