In the old days, wrestlers wouldn't spend hours meticulously putting together a contest, ensuring each beat was hit at a specific moment in their allotted match time. Instead, these masterful stars would often call their entire bout on the fly and play off whatever reaction they were getting from the crowd in that building.
In this day and age, however, a lot of the matches we see on television are thoroughly planned out in order to make sure things go off without a hitch. That doesn't necessarily mean that things always go according to plan, though.
Time and time again we've seen a match flipped on its head due to an unforeseen circumstance. Be that a botched pinfall, spectacular accidental bump or just hilariously bad timing, when these unexpected incidents/blunders become a reality it usually leaves fans around the world questioning if what they've just seen should have actually happened.
It's always a good thing to be prepared. Yet, if wrestling has taught us one thing, it's that anything can happen once you step in-between the ropes and even the best-laid plans of mice and McMahon often go awry.