This word is derived from Murphy's Law (Whatever can go wrong
will go wrong). If you are ever caught in a situation where nothing is going your way and this situation get exponential worse over time and there's nothing you can do about it because your girlfriends
parents found out you've had sexual relations with their daughter and she found out she's pregnant and your failing
school and then your kicked out of the chess club and your
dad finds your stash of weed and you crash your dads car and your pet fish
fluffy dies all in one day, etc...
The time component of this word is very important. All bad events that occur must happen within 24-48 hours from the first misfortune...unless you really get murphied and the time component is prolonged x hours.