Murphy's First Law: Anything that can go wrong will go wrong.
Murphy's Second Law: Nothing is as easy as it looks.
Murphy's Third Law: Everything takes longer than you think it will.
Murphy's Fourth Law: If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong.
Corollary: If there is a worse time for something to go wrong, it will happen then.
Murphy's Fifth Law: If anything simply cannot go wrong, it will anyway.
Murphy's Sixth Law: If you perceive that there are four possible ways in which a procedure can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.
Murphy's Seventh Law: Left to themselves, things tend to go from bad to worse.
Murphy's Eighth Law: If everything seems to be going well, you have obviously overlooked something.
Murphy's Ninth Law: Nature always sides with the hidden flaw.
Murphy's Tenth Law: Mother nature is a bitch.
Murphy's Eleventh Law: It is impossible to make anything foolproof because fools are so ingenious.
Murphy's Twelfth Law: Whenever you set out to do something, something else must be done first.
Murphy's Thirteenth Law: Every solution breeds new problems.
Murphy's Fourteenth Law: If anything can't go wrong on its own, someone will make it go wrong.