It's that time of year when people start throwing those ridiculous ugly sweater parties, and there is usually a competition to see who has the ugliest.  Well, if you have a working train set on your ugly sweater, you win.

You wear it once a year so I guess you might as well go all out.  Be tough to hang out at a party though, seems like you'd always be in the way.  Clearly not very practical, but extremely impressive.