BALTIMORE—After being questioned about the thing he had just made up in conversation Tuesday, 37-year-old Paul Rosada explained to those around him that, not only was his fabrication true, but he had recently read somewhere that it had been definitively proven. "You didn't hear about that?" asked Rosada, saying he probably still had the article at home, though he might have thrown it out. "It's probably online. I'll send you a link." Rosada added he was particularly surprised no one knew about the thing he had completely invented because he heard on the radio that they were making a documentary about it.