There were two bulls, a young one named George and an old one named Sam. It was that time of year to satisfy the local female population and young George was pretty excited. "Sam, can I go down to those heifers over there?" asked George. "George, relax. Here is how it works. We'll wait until they're lined up at the feed trough so we can have our way with the ladies in a nice orderly fashion." said Sam. "Okay, I can do that." George answered. Well, feeding time came and all the heifers were lined up just like Sam said and George was all excited to go down there but Sam had a few more instructions. "Now George, here is how this is gonna work. I'll start at one end and you can start at the other. We'll meet in the middle" said Sam. "OK, OK, let's go!" said George. "Hang on George!. One more important thing to remember. These gals will let us have our way but you have to show some respect and be polite. OK?" said Sam. "Sure" says George. Well, they go on down to the heifers all lined up. George starts at one end and Sam at the other. George is pretty excited, but he remembers Sam's instructions about being polite, so as he is going along he makes sure to say - "Thank you ma'am, thank you ma'am, thank you ma'am, thank you ma'am, thank you ma'am, Oops! Sorry Sam, thank you ma'am."