The Law of...

Law of Mechanical Repair:
After your hands become coated with grease your nose will begin to itch or you'll have to pee.

Law of the Workshop:
Any tool, when dropped, will roll to the least accessible corner.

Law of Probability:
The probability of being watched is directly proportional to the stupidity of your act.

Law of the Telephone:
When you dial a wrong number, you never get a busy signal.

Law of the Alibi:
If you tell the boss you were late for work because you had a flat tire, the very next morning you will have a flat tire.

Variation Law:
If you change lines (or traffic lanes), the one you were in will start to move faster than the one you are in now.

Bath Theorem:
When the body is fully immersed in water, the telephone rings.

Law of Close Encounters:
The probability of meeting someone you know increases 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.