THE ACE OF OWWWWW!!
A 50 year old man in German was admitted to the hospital complaining of headaches that would not go away and getting worse. He had no history of drugs, but did tell doctors that he a attended a Motohead show about a month earlier.
Turns out that he was headbanging so hard that he injured his brain and it started bleeding!
Doctors drilled a hole in his head to drain the blood and the headaches went away.
Now that is METAL! \m/
Ok let's try this at home, but we're not responsible for any brain breaking injuries. Here's Motorhead with Slash and Dave Grohl, doing Ace Of Spades: