It might sound crazy, but there are some positions, or sexual adventures, that men just don’t like.  That’s not saying they don’t enjoy the sexual part of it, but there are definitely certain things that can take a great sexual experience to something scary, painful, or unpleasant.  Most of these sexual scenarios are ones where the penis could be in danger of incurring a serious injury.  The worst case scenario is a penile fracture, which unfortunately is one of the most common sex injuries among young men who engage in strenuous sex.