Pigeonhole-principle Memes

Someone taped a visual guide to urinal etiquette in a CS building bathroom and labeled it "Pigeon Hole Principle." Four urinals, three guys wearing brown shirts, one brave soul in blue who clearly drew the short straw. The Pigeonhole Principle states that if you have n items and m containers where n > m , at least one container must hold more than one item. Applied here: four urinals, but urinal etiquette demands you leave gaps, so really you've only got two usable spots. Guy in blue? He's the overflow. The mathematical proof that bathroom awkwardness is inevitable. Whoever printed this out and stuck it on the wall understands both discrete mathematics and the unspoken social contract of public restrooms. Respect.