Answer:
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
What is it that has four legs, one head, and a foot?
What is round as a dishpan, deep as a tub, and still the oceans couldn't fill it up?
My thunder comes before the lightning. My lightning comes before the clouds. My rain dries all the land it touches.
What is yellow, looks like the moon and has seeds?
I have two eyes in the front and a lot of eyes on my tail