A traveler wandering on an island inhabited entirely by cannibals comes upon a butcher shop. This shop specialized in human brains differentiated according to source. The sign in the shop read: Managers Brains £9/Kg Moslems Brains £12/Kg Prostitutes Brains £15/Kg Motorist Brains £19/Kg Upon reading the sign, the traveler noted, "My those motorist brains must be popular!" To which the butcher replied, "Are you kidding! Do you have any idea how many motorist you have to kill to get a Kilogram of brains?!"