I ordered this a couple of weeks and it just arrived about an hour ago. I thought you guys would get a kick out of this, so I figured I'd post. I ordered a Hanwei practical Ninja-to. It has a battle ready blade, 24" blade and it weighs 1 pound 15 ounces. This is a lot heavier than it sounds. I found this handy little page if you guys would like to see more of what it can do.
I'm going to post a few of my pics in a little bit. Get ready for the most epic thing you will see in your life: Me pwning a watermelon (with a face drawn on it) with a ninja sword.
Why would a Ninja need a sword? They were spies, traitors, poisoners, and in general, solid cowards. Can't imagine one using a sword on anything more solid then a little old lady, or an infant. As long as it was sleeping. Pirates were quite the bullies as well, and favored overwhelming odds, but at least they would face a man, if the circumstances required it. (Though they would also stab one in the back, given the opportunity.)
DB I'm srsly mortified man, it took me 3 and a half minutes to think of how that could be dirty, and I'm srsly sickened that you thought of it that way. EWWW.