Where particles are like, totally uncertain about their position, and waves are like, totally uncertain about their, um, wavy-ness.
And don't even get me started on superposition! Like, I could be here, or there, or possibly everywhere, at the same time. Mind. Blown.
Quantum Fluff: where the rules of physics go out the window, and the window goes out the window, and we're all just, like, totally lost in a sea of uncertainty.
Want more? Quantum Tunneling 101 will blow your mind.
Or maybe not. We're not really sure.