Friday Video Fun: Laughing baby

Since we're all on the fragile side over at Shiny Towers, there's really only one thing left to do: watch stupid videos on YouTube that our shrunken, dehydrated brains can just about appreciate. Here's a video of a baby who has the dirtiest laugh I've ever encountered on a pre-school human. It starts to get a little freakish by the end: where is all that mirth coming from?