Poor Pluto was disqualifed as a planet on the 25th of August.

The reason was cos Pluto did not fit into the new definition of a planet.
So what exactly is a planet today?

Quoted from an article:

"According to the new definition, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit.

Pluto has been demoted because it does not dominate its neighborhood. Charon, its large "moon," is only about half the size of Pluto, while all the true planets are far larger than their moons.

In addition, bodies that dominate their neighborhoods, "sweep up" asteroids, comets, and other debris, clearing a path along their orbits. By contrast, Pluto's orbit is somewhat untidy."

The moral of the story:

If you finally get promoted, jolly well make sure that everyone stays far behind you.
And clean up your working cubicle.
Or sooner or later, the people who promoted you will meet up and demote you again.
Reason: Becos you aren't big enough. And becos you are dirty.