Then there is a story of a tyrrant ruler who had his photograph
embossed on the postage stamps. When after a month he summoned
his head of the postal department to know about the sale of such
stamps, he was immensely happy to know that the stamps were
selling like hot cakes. But there was one compaint : the buyers wanted the
photograph's side to have the dry gum. "Why?" the surprised
tyrrant asked: "Because they prefer to spit only on this side of
the stamp," replied the bold man.