The Monster at the End of This Book (Sesame Street)

Many, many adults name this book as their favorite Little Golden Book. Generations of kids have interacted with lovable, furry old Grover as he begs the reader not to turn the page . . . for a monster is at the end of the book!
“Oh, I am so embarrassed,” he says on the last page, for of course the monster is Grover himself!