"Additions to Murphy's Laws" joke

The Law of Volunteering
If you dance with a grizzly bear, you had better let him lead.
The Law of Avoiding Oversell
When putting cheese in a mousetrap, always leave room for the mouse.
The Law of Common Sense
Never accept a drink from a urologist.
The Law of Reality
Never get into fights with ugly people, they have nothing to lose.
The Law of Self Sacrifice
When you starve with a tiger, the tiger starves last.
Weiler's Law
Nothing is impossible for the man who doesn't have to do it himself.
Law of Probable Dispersal
Whatever hits the fan will not be evenly distributed.
Law of Volunteer Labor
People are always available for work in the past tense.
Conway's Law
In any organization there is one person who knows what is going on. That person must be fired.
Iron Law of Distribution
Them that has, gets.
Law of Cybernetic Entomology
There is always one more bug.
Law of Drunkedness
You can't fall off the floor.
Heller's Law
The first myth of management is that it exists.
Osborne's Law
Variables won't; constants aren't.
Main's Law
For every action there is an equal and opposite government program.
Weinberg's Second Law
If builders built buildings the way programmers wrote programs, then the first woodpecker that
came along would have destroyed civilization.