The rules are simple. Two competitors drink a ton of beer. Then, they put the spent beer boxes on their heads and square off. One man calls "Cheese!" The other responds "Sandwich!" and gets a brief chance to strategically position himself. Then the first guy, unable to see with the box on his head, tries to locate his opponent Marco Polo style, but he tags him with a punch to the dome. The results are hilarious.
Grab a few brothers and some beer and make a night of it.