It's thundering outside

Lucy: Daddy, where does the thunder come from? Is there a guy up there shooting it in the sky?

Daddy: Great question. Lets talk about it.

Lucy: So it's going left and right. It's going each way.

Daddy: Yes. And when God lets it rain...

Lucy: The water drips from the clouds. The sun is right here (points). We're right there. But there's a big earth like this. So you don't have a way to get out. But we can drive. Watch this (touches the wall with her head).

Conversation over.