I heard this story on my Sirius satellite radio on the way home from work. I looked it up and read the article. You can follow the link but I'll paraphrase here for the sake of discussion.
Basically a guy got shot in the head from a small caliber weapon while sleeping. Then four hours later he awoke to find blood. The police said the bullet lost velocity going through the wall of his West Virginia mobile home. Someone had sprayed four or five rounds into his house.
Okay I'm a sound sleeper but I thin I'd wake up at the sound of a single gunshot much less four five. And when a bullet smacked in the head, whether it had lost velocity or not, I'd wake up and I'd be pissed, or curled up in the fetal position crying like a baby. Hey, it's easy to be tough until you take a bullet to the head.
By the way, near the end of the article it does say he'd been asleep about an hour after a night out on the town. Now there is a euphemism for ya' .