Noooooooo!!!! I didn't want to kill you, really. ^^

As a funny coincidence, a fresh bachelor student asked me and colleagues earlier today what quantum mechanics was. It is very hard to explain but the impact are easier to grasp. It explains why matter is coherent and not falling apart. It also explains while although any stuff (object or being) is mainly made of vacuum, it has a solid envelope somehow. And it is damned counter-intuitive in its first approach.

If you are interested, I wrote a bachelor's level primer book on quantum mechanics (in French). Otherwise, I am afraid that I do not know what to answer without having the question more specific.