Stab someone (or something) with this and they’ll pop like a balloon. For reals…check the video after the jump. The knife/weapon works by injects a freezing cold ball of compressed gas (approximately the size of a basketball), at 800psi nearly instantly into whatever the blade is thrust into. There’s enough gas/pressure to drop pretty much anything this planet has to offer. I get the tactical/military use for something like this, even the usefulness for divers—stab a fish under water and the sucker will not only float right to the top, the gas will also freeze all tissue and organs surrounding the point of injection. Meaning no blood is released into the water. Something that might come in handy giving sharks appetite for blood. Pick it up now…

WASP Injection Knife vs. Watermelon