NaBloPoMo: Memories of elementary school

Do you remember when the dentists would come visit your elementary school? (Did this happen at anyone else's school?) At our school, they'd bring toothbrushes and small tubes of toothpaste for each kid, and talk about the importance of brushing and flossing regularly. But the thing I remember the most is those pink disclosing tablets. (Warning: the link takes you to a relatively gross photo.) Remember those? You'd chew them up, swirl them around in your mouth, and then the pink would show up on your teeth wherever you hadn't brushed thoroughly enough. I can still remember exactly how those things tasted. Ahh, memories!