Two Conversations with a Four-Year Old

We have an anatomy book in which the different systems are represented by different teams of tiny people working inside the body.

Brother-Bug: Mama, when those little guys are working inside the body, where do they go to the bathroom?
Mama-Bug: Sweetie, those little guys aren't really in your body. It's just imaginary in that book.
Brother-Bug: I KNOW it is imaginary. But where would they go to the bathroom...if we were imagining?
Mama-Bug: I suppose if there are imaginary people inside your body, they must have imaginary bathrooms.

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And with their Grandmommie just back from holiday in Sicily, we were talking about volcanoes and Mount Etna today. A lot.

Brother-Bug: Mama! I think the inside of my nose is turning into a volcano!!
Mama-Bug: What might happen then!?
Brother-Bug: I will have hot lava snot! I might erupt!
Mama-Bug: Well, if that happens take it outside. I don't want volcanic ash all over my living room.
Brother-Bug: Maybe I can erupt by the mail box?