Sometimes Tall, Sometimes Small

Sometimes I am tall (stand up straight)
Sometimes I am small (crouch close to ground)
Sometimes I am very, very tall (stand on tiptoes)
Sometimes I am very, very small (crouch close to the ground)
Sometimes tall, sometimes small (stand up, crouch)
See how I am now (stand normally)

- from I'm A Little Teapot by Jane Cobb, 1996 p. 178