Blue Boy by Frank ZakThe routine begins with a discussion of how playing cards were originally hand painted and considered pieces of art. A card is then selected and returned to the deck. You then display four postcards, each depicting Gainsborough's The Blue Boy painting. You explain that one of them is a forgery as the spectators immediately spot the obvious and amusing fake. The postcards are turned over to show Gainsborough painted a back to Blue Boy but no one ever