It is possible to damage the corpus cavernosum during masturbation, but most of them do not have damage to the corpus cavernosum. The spongy body of the penis is in a state of congestion during masturbation and will ejaculate when it reaches a certain level of stimulation. If a little bit of force is not applied properly, the spongy body will be damaged and the penis will experience painful symptoms after the spongy body is damaged, which can lead to bruising and subcutaneous hematoma in serious cases. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things.