In [this question](http://diy.stackexchange.com/questions/3405/why-does-my-toilet-keeps-blocking-and-then-spill-out-of-the-drain-outside) the OP mentioned that, when having problems with blocked toilet, as his first attempt he tried *warm water method*.

I would like to ask:

> * What is *warm water method*? For which purposes and in what situations can it be used?