When I was in kindergarten, we used to listen to this moody song at naptime called Inchworm. A beautiful female voice sings solemnly, while a group of children whisper the chorus. I hope these lyrics refresh your memory.
Inch worm, inch worm
Measuring the marigolds
Could it be, stop and see
How beautiful they are
(Chorus of kids:)
Two and two are four
Four and four are eight
Eight and eight are sixteen
Sixteen and sixteen are thirty-two
So, one day at Grandma's house, I’m flipping through channels on the TV, with the volume down, and Inchworm is stuck in my head. I come across Pink Floyd's The Wall on one channel. It's the scene where the kids are falling off the conveyor belt, into the shredder, and being ground into hamburger meat. I instantly associated "Inchworm" with the image of the ground meat oozing from the shredder and believed that this was a documentary about kids who were bad at school.
A childhood belief about people

others believed things like this
- my brother used to believe that Ground Chuck meat was actually groundhog meat. Anon
- I thought ground beef was the meat they scraped off the ground at the slaughterhouse. Yuck.Anon
- I once believed that if you touched hamburger meat, it would explode!— Dipaloe
- When you are very poor you "can't make end's meat." End's meat is some sort of cheap very low quality meat.— Betty
- I swear I heard a Disney Channel/Radio Disney song where the chorus was a repeated “Damn it”— SpengBab
- I believed that ham was mouse meat, because it was pink and my dad told me so. — Zo