Deciding not to "pay your fair share" can result in a $112 slap on the wrist from Muni fare inspectors. It happens all the time — at San Francisco State University, for example, proof-of-payment workers crowd the bus stops along 19th Avenue and fine the hungry students who are just trying to save a buck to eat. Or at downtown Muni stations, where inspectors wait out of sight at the top of stairways for their unsuspecting victims to pay their dues. But some smart commuters — who don't mind the ethical implications of not paying into their city's public transportation system — have learned that spinning away from fare inspectors might just be the most effective way to avoid a ticket. On a recent weekday, one fare evader climbed the stairs of Powell Station and was met by a wall of proof-of-payment inspectors who held out their scanners to him, suggesting he show he paid for the train. But instead of stopping when they blocked his path, the swift thinker just spun, spun and spun until he was through the fare gates and away. You see Muni fare inspectors, or "transit fare inspectors" as they are called by Muni, are not sworn officers or even security guards, and therefore cannot make detentions. So next time you forget to pay for a $2.25 ticket or reload that Clipper Card, and your moral compass is somewhat astray, just walk away — or be the best kind of fare evader and spin.