Here is a definition of entropy. Please don't read it.
In thermodynamics (a branch of physics), entropy, symbolized by S,is a measure of the unavailability of a system’s energy to do work. It is a measure of the randomness of molecules in a system and is central to the second law of thermodynamics and the fundamental thermodynamic relation, which deal with physical processes and whether they occur spontaneously. Spontaneous changes, in isolated systems, occur with an increase in entropy. Spontaneous changes tend to smooth out differences in temperature, pressure, density, and chemical potential that may exist in a system, and entropy is thus a measure of how far this smoothing-out process has progressed.
Smoothing out??? That is a sneaky euphemism! What entropy is is the determination of everything in our universe to break down into its original components, preferably at the moment when you are most dependent on it.
I "smoothed out" last evening when I suddenly went from vertical to horizontal, the back of my computer chair having entropised, or whatever the bloody word is. The metal "spine" had broken in two, literally, so the chair suddenly went from chair to gurney. It was going back to its constituent parts, a process which I assisted today by throwing it into a skip at our local landfill site, and then replacing it with a Staples lookalike.
So, mes potes, I am a-rockin and a-rollin in a new smart executive style chair, definitely i coglioni del cane, but I have a sneaking feeling that it is already sizing up my backside and beginning to think about "smoothing out". Damn all inanimate objects: they really ARE out to get you.