A farmer drove to a neighbour’s farmhouse and knocked on the door. A boy about 9 years of age opened the door. “Is your dad or mum at home?” said the farmer. “No they went to town.” “How about your brother Howard, is he here?” “No he went with mum and dad.” The farmer stood there for a few minutes mumbling to himself. “I know where the tools are if you want to borrow one, or I can give dad a message.” “Well I want to talk to your dad about your brother Howard getting my Suzy pregnant.” The boy thought for a moment then said “ you’ll have to talk to my dad about that, I know he charges £500 for the bulls, and £150 for the pigs, but I have no idea how much he charges for Howard."