A childhood belief about speaking

My elementary school was very big on teaching us that litter was bad. I misheard the word as "glitter".

When my brother tried to drop a cup outside the window of our car once in a parking lot, I told him grumpily, "No glittering." I imagined that all the litter, if left on the sidewalk for long enough, would turn into glitter. Of course it made sense that glittering wasn't allowed--glitter was a pain to clean up if there was a lot of it spilled!