This animated TED-Ed lesson from Michelle Brown looks at weird images that we know from medieval art and particularly from the doodles of monks copying and illuminating manuscripts by hand. Certain ideas are found over and over, so they must have some meaning. We know the meaning behind some, but not others. Could it be possible that one person drew a funny image, and others laughed and drew it also, until it became ubiquitous? Happens every day on the internet. You would imagine the medieval version would just be slower. -via Laughing Squid