Penis Safety
The penis isn't a terribly delicate organ – but it is made of skin and flesh, after all. In fact, the skin is much thinner on the penis than, say, on your hand or arm, so it can actually get damaged pretty easily.
Hot Stuff
Some people like to masturbate with a warm object, like a hot water bottle or something that gets warmed up in the microwave oven. But you need to be careful when you masturbate with artificially warm objects.
Injaculation
There are techniques where you squeeze or press certain areas of your body at orgasm to keep the semen from coming out.
Final Thoughts
By no means is this page an exhaustive list of the risks you encounter when you masturbate outside the norm.
