6 21.12.2011 22:16:34 After the college boy delivered the pizza to Rodney and Cathy`s house, Rodney asked, "What is the usual tip?""Well," replied the youth, "this is my first trip here, but the other guys say if I get a quarter out of you, I`ll be doing great.""Is that so?" snorted Rodney. "Well, just to show them how wrong they are, here`s five dollars.""Thanks," replied the youth, "I`ll put this in my school fund.""What are you studying?" asked Rodney.The lad smiled and said, "Applied psychology."