Law of the Bath - When the body is fully immersed in water, the telephone rings.

Law of Close Encounters - The probability of meeting someone you know INCREASES dramatically when you are with someone you don't want to be seen with.

Law of the Result - When you try to prove to someone that a machine won't work, IT WILL!!!

 Law of Biomechanics - The severity of the itch is inversely proportional to the reach.