"If something can go wrong, it will."
“If something can go wrong in more than one way, it will always go wrong with the worst possible outcome.”
"Even if you block the possibilities that something could go wrong, a new possibility will instantly arise."
"The probability of something happening is inversely proportional to the probability of wanting it."
"Sooner or later the worst possible chain of circumstances will occur."
"Every time you give up something, it comes back to you."
"If it doesn't work, force it, if it does, it should be changed anyway."
"No matter how long you wait, the unintentional time will come."
"Every problem solved creates new problems."
"If everything is going well, something is definitely wrong."
"If you play too much with something, you break it."
"A calculator that worked flawlessly for a whole period of time runs out of battery in the math exam. (explanation: just in case, if you carry a battery with you, it will be stale too)"
"Nothing is as easy as it seems."
"The day you win the lottery, it's not long before you die."
"If you can't understand something, it's instinctively true."
"If you say to someone, "The table is painted, don't touch it!" he will definitely touch the table before he believes you."
"If you're feeling good, don't worry, it'll pass." [2nd]
“Start looking for something from the very end, not from the beginning.
"The probability of hearing something you tell is inversely proportional to your desire to tell it.