This Just Doesn't Look Safe

Obviously these two are masters but ONE mistake and you can really mess someone up badly and for all time.

It might not be as popular as Indy’s whip or Ned Stark’s broadsword, but the urumi is too badass to die.     

http://www.atlasobscura.com/articles/indias-deadly-flexible-whip-sword-takes-years-to-master