In the days of primitive tribes and grass huts, there was one tribe which was very warlike. They won many battles, and took control of many other tribes.
One of their customs when they beat another tribe was to take the most prized posession of the enemy's chief.
One time, after a particularly fierce battle they defeated a rich tribe, whose king had a prized solid gold throne.
Our warlike tribe took the throne, and put it in the loft in their cheif's house. Unfortunately, the throne was much too heavy to be kept in a loft in a grass house, and it fell right through the ceiling, onto the chief, killing him instantly.
The Moral of this story is...... People who live in Grass Houses shouldn't stow thrones!