"Excuse me ladies and gentlemen."
Those five words are Pavlovian triggers at this point for people who ride the subway on a daily basis.
So you reach into your pocket, grab a fistful of change, and settle in for one of several familiar sob stories.
But what if the supposed sob story is actually a pretty uplifting tale of success and good fortune? And what if the supposed subway panhandler is actually a "subway bragger"? How long would it take you to notice?