Dear Ed and Anon, You had me wondering if you were going to tell the old joke about Pi, which is probably unknown to many of the younger generation.

One variation from your rendition to the way I have always told it. When Junior came home from college, his Pop wanted to show him off to his family and neighbors so he threw a big party. In the middle of the party, Pop said, "Junior come up here where everybody can see you and say something in Algebra" thinking that Algebra was a language.

Junior, not wanting to make Pop look so foolish said, "Pi r square." It was then that Pop whapped him with his hat and said, "Junior, they have made a plumb fool out of you up thar at that college. Anybody knows that pie are not square. Pie are round. Cornbread are square." --Paul Patton