You can't hide a piece of broccoli in a glass of milk. Don't wear polka-dot underwear under white shorts. It's hard to unlearn a bad word. It's easier to see the mistakes on someone else's paper. A pencil without an eraser may as well just be a pen.
Twelve is a lot older than eight.
If you want a kitten, start out by asking for a horse. Your room gets smaller as you get bigger. You can't start over just because you're losing the game. All libraries smell the same. If you want someone to listen to you, whisper it.