We've all seen those sitcoms or movies in which someone stumbles into an art auction and, not knowing how it works, idly scratches his nose or pulls his ear and finds himself the owner of a Rembrandt.
Better yet, there's one of my all-time favorite films, “North by Northwest.” Surrounded at an auction by the bad guys, Cary Grant makes outrageous bids and yells insults until the police arrive and unknowingly haul him off to safety. (“How do we know it’s not a fake?” he shouts about one painting. “It looks like a fake!” A woman sitting in front of him turns and replies, “You’re no fake. You’re a genuine idiot.”)