I just had to give you this one story of mine while I was working in a repair shop.
Basically, an angry customer came in and was shouting all over the place. His PC wouldn't turn on, and now this specific setup had one of those power supplies that supported one kettle in and one out to a screen, so there were two connectors (see where I'm going..) I honestly expected the power supply to be broken or something legitimate but no.
Turns out this guy was making a fuss about everything, he claimed to know computers and we sold him a "dead" one. After arguing, he eventually demonstrated how he plugged in the PC, he literally took a female to male kettle plug, plugged it into the bottom part of the PC. Then they proceeded to plug it into the top bit of the power supply.
My co-worker ran out the shop trying to hold in his laughter, why I had to try explain how a computer could not evolve into a generator.
It all ended with the argument that it's called a "Power Supply" so it should be supplying power. Who knows, self powered computers are the new thing heh?