Re: Misty Menaces
He sees the rig, hears the comment, and you can see a lightbulb, as it were, go on above his head.
"Good. Yes, I can get you some." He looks about in his office, and comes up with a joke grenade. "Its a wallet. But except for the boom, it works."
He turns a screw one click left, spins it to right three revolutions, and the screw pops out, and klunks on the floor. The arm is now free to move, and you have four seconds before it would explode. He shows you that you can reverse insert the screw, by its wide, easy turn top, and that makes it an explode on impact device. He also rescrews in the screw, and it self-locks to the left with an audible click.
"Now it's safe. You try it." He has you do it a half-dozen times until he's confident you got the basics down.