The instructions for the Watermelon Keg come from none other than the National Watermelon Promotion Board — which is an actual thing, apparently. Essentially, you slice off a thin layer from the bottom end, slice open the top, scoop out the meat (or liquefy with booze) and jam a spigot in the front.
What would be really awesome is if you got a bunch of those cube melons they sell in Japan, stack them vertically and run tubing from the top melon to the bottom one (which would hold the spigot). Put a couple of umbrellas in that bad boy, and you are set for the luau.
