My favorite tour guide was in Bruges, Belgium. We debarked from the bus on the canal bank and he patiently explained in excruciating detail the architecture and function of each of the many beautiful Guild Houses on the opposite bank. One woman who had been a complainer and nuisance all day was afraid that she was being shortchanged; she asked peremptorally, "Tell us about that clock over there!" After a long pause, during which the rese of groaned silently, the guide replied, "That clock, Madam, is to tell the time in Bruges." We couldn't restrain ourselves from laughter and applause.