Illustrated by Quentin Blake.
"You're growing too fast. Boys who grow too fast become stupid and lazy."
George's grandma has some pretty odd views. In fact, she's not a very nice person at all. She thinks caterpillars and slugs are delicious and likes to crunch on beetles best of all. George can do nothing right in Grandma's eyes, so when it's time for her medicine he decides to give her a dose of his own special brew.