3 years & up. This classic book features silly tongue twisters that will have young readers giggling with glee. When a fox in socks meets Knox in a box, hilarity ensues. Add chicks with bricks and blocks and clocks, and you're sure to get your words twisted and lips locked! With his unmistakable gift for rhyme, Dr. Seuss creates a hysterical and energetic way for beginning readers to dive into the joy of reading.