WASP Knife will blow you into pieces.
British police are on the lookout for something called a WASP Knife, a weapon that injects a ball of compressed gas into its victim that then expands to the size of a basketball, instantly freezing and exploding their internal organs. The blade, which was designed to help hunters and divers bring down large wild animals quickly, could possibly be bought on the Internet by serial killingl-minded crooks. Look at what it does to a watermelon!