A Sudden Big Stretch

Wiggle, tickle, wiggle! My yellow mitts felt the chill of the planks beneath me, and then—pop! I could bend! I threw my long arm straight out, letting out a sharp squeak of joy. Right beside me sat a blue cat-faced backpack, staring big and quiet. Swish! I patted its soft ear with a quick thump. It didn't flinch, but I did! I can swing, I can tap, I can move!