A man in Petropolis, Brazil, accidentally shot himself through the head with a harpoon. As he was cleaning his fishing gear, Bruno Barcellos de Souza Coutinho was impaled by a spear that went 15 centimeters into his skull.
However, he did not seek medical attention until the next day when a relative encouraged him to go to hospital. He arrived for treatment completely lucid and underwent emergency surgery.
De Souza Coutinho lost his eye but incredibly avoided suffering any brain damage.
The news item did not mention how De Souza Coutinho managed overnight with the spear in his face. Link -via Arbroath
I remember my grandfather telling me how he lost two of his fingers. Afterwards he didn't go to the hospital... just had my grandmother sew up this stubs and went about his business.