Explain Like I'm 5

So, you know how things fall down when you drop them, like your toy car or your ball? That's because of something called gravity!

Gravity is like a big hug from the Earth. The Earth wants to keep everything close to it, so it pulls on everything that's above it, like you and your toys. That's why you don't float off into space when you're standing on the ground. It's like the Earth is giving you a big squeeze, and that's what keeps you on the ground!