Los Angeles - A man heard his penis "snap" during sex.
Alan Parke was in the midst of what is formally known as the cowgirl - which is also one of the most dangerous sex positions - with his 22-year-old girlfriend Clarissa Cairns when he fractured his penis.
He told the Irish Mirror newspaper: "I've never known pain like it. We were just having sex, I was on the bottom and Clarissa was on top.
"All of a sudden I heard something snap. I've never known pain like it. It was absolutely excruciating."
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Girlfriend Clarissa added: "It was a while before he could even play with himself again, he was in that much pain."
Alan had to have his penis put in a sling after the operation but he said the taunts of fellow patients in the hospital left him riled up.
"One patient kept laughing at the pain I was in...Security wouldn't let me out of their sight I was so angry."
Three months after the sexual incident, Alan said his penis was just about healed after he was forced to stay out of work for eight weeks.