Since the dawn of time man has fought against a mortal enemy: The Zipper. Since we became civilized as a people we have overlooked our differences, and lived side by side with The Zipper (literally) save for a small group who went the way of the button fly, and an even smaller group who wear sweatpants exclusively. Despite this truce we've had with The Zippers they occasionally revert back to their old ways and attack reinvigorating the rivalry once again.