"Bennett Cerf's Pop-Up Silliest Riddles" is a vintage children's book published in 1967 by Random House. Written by Bennett Cerf, the book is an activity book filled with humorous riddles geared towards children ages 4-8. The book features pop-up elements, making it an interactive and engaging read for young readers. With a focus on humor and riddles, this book is sure to provide entertainment and fun for its intended audience.