Try as you might to find the ugliest Christmas sweater imaginable, you're not going to be able to top YouTube's bd594's creation this year. It's got an ugly argyle pattern, a tacky Christmas tree, blinking lights, and the pièce de résistance?: a working toy train circling the gaudy creation.
There's no word on what this custom creation cost to build, but the look on your co-workers' faces when you show up to your company's black tie holiday party wearing this? Priceless. [YouTube via The Awesomer]