It’s been around since the 60’s and even today kids still play with the classic Etch-A-Sketch!

But have you ever wondered how the hell it works AND why you can draw and erase countless times?

(We think it’s black magic!)

Well YouTuber Grant Thompson wanted to know as well so he busted open a couple to see whats going on in there.

Things ends up getting surprisingly messy but it also looks like a LOT of fun.

Take a look as they crack open a childhood mystery!