Most Useless Machine gets more exciting

Here's a new wrinkle on the Most Useless Machine (a box with a single switch, which, when toggled, causes a mechanical finger to leap out of the box and switch it off). After a certain number of duelling on-off cycles, this jolly Most Useless iteration does something VERY EXCITING!

全力でスイッチをONするとOFFするロボットをいじめてみた (Thanks, Colin!)