An admiral is sailing a ship... and ahead of him, spots an incoming light. He radios the light, commanding, ""Turn 10 degrees South to avoid a collision course."" The radio squawked, ""No, you are to turn 10 degrees South."" This exchange happens about 3 or 4 more times until finally, the admiral yells into the radio, saying, ""Do you know who you are talking to? I AM AN ADMIRAL OF THE UNITED STATES NAVY!"" The radio says back, ""Well, you're talking to the lighthouse.""