Did you hear the one about the guy who dressed up as Batman and knocked himself out on his ceiling fan, landing on his wife who was tied to the bed and had to scream for help? Now, I could swear that when I heard that story it was Superman. The AFU and Urban Legend Archive has it under Batman, however, and I guess it's an urban legend. One that got space in the Seattle Times and the Chicago Tribune.
Super hero stories aside, my guess is that most of us have at least one sexual mishap in our past. Let's face it, sex can be messy, sex can be dangerous, and if you're not laughing at some point, I think you might be doing it wrong.