EVANSTON—With April 20th looming, as every year, just on the heels of April 19, vending machines across the country are being restocked and fortified against the impending onslaught of stoners who “could really go for some Ho-Hos right now.” In dorm buildings and break rooms everywhere, vending machine companies are seeking to prepare themselves for the sudden demand for their services that occurs every year on Hitler’s birthday, knowing full well that insufficient preparation could lead to disaster. It is