This one was actually told to me by the "victim".
He's this friend of mine that used to co-own a club. So after a really crazy night, staying awake and just keeping it going, He and his partner went out to this chinese resaurant for breakfast. He was really sleepy but kept on talking then all of a sudden he heard a very loud bang! Then he opened his eyes and everyone was staring at him. You won't believe he actually fell asleep and fell off his seat.
I wasn't there, but imagining it alone made me almost burst my spleen!

and take off for the sound and we find my friend on the ground and it turns out she had run headlong into a fence 
<- thats for you Mr. J!