When I was a teen, I noticed products started advertising they were non-toxic. Maybe that bit of information was always there and I just didn't notice until I was a teenager. Either way, it was then that I saw the non-toxic information on the packages. I always joked, "Oh good, it's non-toxic, we can eat it." I would laugh to myself and wonder why it mattered. Who was going to eat a marker anyway, right?
Fast forward 10+ years and lets look at my youngest child today. His lips, hands, and forehead bear the marks of a light green marker. He first put it in his mouth (he has destroyed several markers this way, biting off the tips) and took it out only when I pulled it out. He went back to his paper and then tried drawing on his hands. "No," I said, "don't write on your hands, only on the paper". He goes back to the paper, but only for half a moment. He raises his marker over his head and very casually brings it down over his blond hair onto his forehead. At that point, the marker got taken away.
I'm so glad those markers are non-toxic and my youngest can eat them without worry.