The key to this design is lithium batteries. When combined with water, they create a chemical reaction with enough heat to explode a bottle of Axe body spray.
According to the Mail Evan Booth says that the idea for the gun came to him when he realised airports sold lithium batteries.
He said that he started working on the project shortly after the TSA began using full-body scanners to screen passengers. “It just seemed so invasive, and really expensive,” he says. “And if you're going to go through all that trouble getting into the terminal, why is all this stuff available in the terminal?”
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