Gone After Eating

During an exhibit at a museum,a modern artist was explaining his work.”This,” he
said, pointing to a completely black canvas, “is a cow grazing.””Where is the
grass?” asked a visitor.”The cow has eaten it,” the artist answered.”In that
case,” the visitor said, “where is the cow?””Well, how could you expect her to
stay,” the artist replied, “after she’d eaten all the grass?”