A stick (Scientific Name: Danneus Pongannus) is a smallish portable section of bifurcated tree. The point at which bifurcation occurs is fundamental to the stickiness of the stick. Too early, and you still have a tree. Too late, and you have a twig.
In 1893, a group of German scientists attempted to formulate a standard definition of the stick in order to prevent illiterate anarchy from spreading amongst the peasantry. They concluded that for something to be a stick, it must be capable of being carried comfortably to Liepzig by a Prussian nobleman on a horse. This definition ruled out trees, but not twigs.
The stickologist, Toddy Jungfrau later proved that the being of a stick is a factor relative to the general space-time continuum of all things including honey. For a huge mastodon, a tree is a stick. A twig, likewise, is a stick for a wasp. The stick, in the absolute sense of the word, does not therefore exist.
Despite the proven non-existence of sticks, they continue to remain hugely popular among dogs and beavers. In a stickless world, the entire beaver economy would collapse and dogs would be compelled to write long poems about meaninglessness.