If you work in a particularly horrid office environment, you may be familiar with the "White Elephant Christmas" tradition. The basics are simple—everyone brings gifts and puts them in a giant pile. You draw a number and pick in order.
Everyone brings something. Everyone leaves with something.
Simple, right? Nice even.
But there's a twist. There's always a twist.
Those who follow you in line get the chance to "steal" your gift rather than pick their own. This leads, inevitably, to people stealing the one thing that isn't disposable crap over and over again, hurting feelings and morale in the process.