I love the humor of what is not said. The snake's silence makes them give an answer.
And continues to make them explain further.
Elephant and Piggie feel they have to explain, "You don't have arms."
The snake yells, "WHAT!!! I DON'T HAVE ARMS!!!!"
Just kidding, he knows he doesn't have arms. But wants to try anyway. So they throw the ball at him. And hit him. And try throwing the ball again. And hit him again.....and again....and again.
So he doensn't want to play like that anymore. But Elephant and Piggie want to play with him, so they find another way.
They play catch WITH snake!
My gosh, that's the funniest book I've read, and one of my new favs, don't care it's meant for kids 1/3 my size and 1/5 my age!