Solid, liquid, and laughing gas

Molly: Why is the the strawberry stuff red, but the strawberry milk is pink?

Me: Because red strawberry syrup plus white milk makes pink strawberry milk.

Molly: Silly mommy.... that's not syrup. Syrup is brown!

Me: Well, there are different kinds of syrup. Syrup isn't just for pancakes, it's a type of liquid with a certain viscocity. (yes, I realize she had no idea what I was saying here, but that's how they learn, right?)

Molly:What's a liquid?

Me: Things like water, milk, and syrup are liquids. Things like ice, cereal, and wood aren't liquids. They're called solids.

Molly: Oh...

Me: Is a cracker a liquid or a solid?

Molly: Solid!

Me: Is juice a liquid or a solid?

Molly: Liquid!

This went on for a while, culminating in:

Molly: Mommy! Guess what!

Me: What?

Molly: A baby's not a liquid.