Conversation in the Van

So, here's a little conversation I had with Carolyn in the van. I nearly fell off the couch laughing trying to tell Jared and Kristen...you really need to hear Carolyn's tone of voice, but this will have to do:

Carolyn: Mom, What would you do if you were a raindrop?

(I'm thinking, 'um, fall to the ground and disappear'...not really getting the question)

Beth: I don't know. What would you do?

Carolyn: I would just sit in the cloud and relax. NOW, do you know what you would do?

Beth: Probably fall to the ground.

Carolyn: No, I think you would fall on a dump truck and slip right off.

What exactly is she saying??!!