Come to think of it, this would make an interesting weapon to try to explain. I bought on as a teen (more for the Cool factor than practicality, as it's not great at chopping)

http://www.1sks.com/store/american-tomahawk-lagana-legend-vietnam-tomahawk.html

"whoop, whoop" would be all the poor SOB heard before it... clanged off the wall. I've never practiced with it. Sorry to disappoint. But, it would be interesting to see the look on the perp's face as I screamed bloody murder as I sprinted down the hall waving this around. Perhaps I need a headdress as well to complete the image?