There is a thread in Physicsforums.com which states due to Quantum Mechanics, if you wait long enough diamonds will appear in your pocket, it also states it's possible for all your atoms to spontaneously re-arrange themselves so you turn into a Boeing airplane. Surely this is fiction?
No, it could be possible. That's why we say that in Quantum Mechanics we deal with probabilities. As Gell-Mann said: That which is not forbidden is mandatory.
But at our scale, the probability that this type of effects occur is sooo small, that it's negligible.