Although there are some reports describing foreign body implantation into the penis by intentional manipulation, no records about patients got aware of it many years after traffic accidents. A 29-year-old male patient had been severely injured in a traffic accident 13 years ago. Following a coma state for several months, he had no any symptom for a long time. Four years later, he got aware of the inconvenience on the ventral side of his penis during erection. His partner had also complained of pain during coitus. When he was admitted to our clinic, there was a semi-mobile, fibrous dense 2x2 cm knob on the ventral side of the penis consisting of a coronal sulcus. Under local anesthesia, we got out of a piece of glass. He was discharged after enough follow-up periods without complication. The interesting point of this case was not the clinical condition of the patient; it was that no one could consider a coma patient would have a complaint of penis injury several years later. This case showed us, one more time, how important the complete physical examination was.