@futurebird @cstross @feliks @RustyBertrand
I wrote a two page short story with this premise in, uh fifth or sixth grade (age 11, for transatlantic purposes) in 1985 or '86*
The hippie/late-boomer co-teachers, fresh from the satanic panic and countless after-school specials, called in my parents because they saw it as a sign of self-harm risk (I just thought it was funny to have Gorlox the Child wipe his blue marble clean of that icky green gunk)