Okay kiddo, so vin etching is like writing your name on your toy so everyone knows it's yours. But instead of writing on a toy, it's on a car!
You know how every car has a special number called a VIN number? Well, vin etching involves taking that number and scratching it onto the car's windows using a special tool. That way, if someone tries to steal the car, they can't sell it because the VIN number is visible on every window.
It's kind of like a superhero leaving their mark on a bad guy. Vin etching is a way to help protect your car and make sure it stays with you, just like your toys.