Because you asked for it, here's a page all about entanglement in quantum physics. It's like, totally not confusing at all.
Entanglement is when two particles are connected in such a way that what happens to one affects the other, even if they're on opposite sides of the universe.
For example, imagine you're on a cosmic game show, and you have to choose between two doors. One door has a prize, the other has a particle that's entangled with the door on the other side of the multiverse.
But here's the twist: when you open the door, the particle on the other side instantly knows what you chose, and it opens its door too.
It's like, totally mind-blowing. Or is it just blowing your mind?