>>12832604I knew a guy that failed his suicide by shooting himself in the head through the roof of his mouth.
Total blackout as soon as the shot was fired and he woke up several weeks later in the hospital, no recollection of any pain. He wasn't directly inconscious though since a neightbour saw him mopping the blood on the floor.
He's fine now, well with a part of his brain missing and some changes in his personality, he likes showing everyone the bullet impact on his ceiling.