All last week, students at Smith College were buzzing over a rumor that the school was going completely vegetarian and locavore. There were protests and counter-protests, a Twitter feed, and a raucous student government meeting featuring a beleaguered dining services manager. Never mind that the Smith administration wasn’t planning on banning meat, food from outside New England, or anything else. The whole thing was a hoax played by two philosophy professors who get up to similar mischief every year.