This homemade stun-gun sword is insane and genius at the same time3/4/2013
Some insane, genius hobbyist has created a sword with a stun-gun integrated into its hilt. You charge it by plugging it in. He promises a more active demonstration is coming soon, but right now, we're just kind of busy freaking out over this thing. Our only questions are: How did it take this long for someone to come up with this, and when will one be commercially available for people to purchase and foolishly endanger themselves with? [Source]
NOTE: The story has been updated to clarify that the stun gun in the video is not manufactured by Taser.
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What future invention are you desperately hoping for?