Yes, it’s possible to break your penis.
Penile fractures affect around 200 Americans each year and usually happens during violent intercourse, sexual acrobatics, or aggressive masturbation.
During an erection, the penis becomes engorged with blood. If the penis is bent in a sudden or forceful manner during this time, the trauma can rupture the lining of one of the two cylinders inside the penis, known as the corpus cavernosum. This is usually accompanied by a cracking sound, followed by severe bruising and swelling.