A childhood belief about birds

There's an aquarium within walking distance of my house. In the wall around their penguin exhibit, they have a small cave with fake eggs. When I was a kid, I thought the eggs were real.

I told my mom that I wanted to take one of the eggs, so I could have a pet penguin. Deciding to humor me, she told me our house wasn't cold enough to keep a penguin, and asked where we'd keep it.

I said we'd keep it in the freezer, of course!