Is there any truth to the common claim that each person has a predetermined number of words that he can speak in his life? Source, please.

If so, then how does it work? In particular (with sources or arguments, please):

* To whom does this apply? Jews? others?
* Does each person have the same number (what number?) or words, or does each person have his own number?
* Can the number change during the course of a person's life, e.g. based on his merits?
* What happens when he runs out of words? Does he go mute? die?
* Does any language count? ([Agglutinative languages](http://en.wikipedia.org/wiki/Agglutinative)' speakers may live long, depending on the answer to the immediately previous subquestion.)
* Do words of _tora_ study and prayer count?
* Does writing words count as saying them? Does [signing](http://en.wikipedia.org/wiki/Sign_language) them?