"Oh, no, it's a real thing - and I'm serious this time," he said, spearing a mushroom. "It's how some of the allies escaped from Nazi prisons. It was all about making use of what they wouldn't think to take away from you. Like... Well, like the old celluloid collars? Those things were so flammable you couldn't believe it, and then crush your melamine buttons buttons for a base, a little of the water they'd give you with your meal, a few other things and you could make a dough that you could set off with the electric from the light socket and a door would blow off the hinges, bam." He took a bite of the beef that had been cooked up and nodded his approval before going on. "'Course, usually somebody got pretty badly electrocuted from it, but it was better to be electrocuted than prisoner."