really?

Your moms ass.

A couple years ago we had a girl in class say "Mr. Davis, what's the hottest planet on Earth?", and we never let her live it down. Later that year someone asked her to homecoming with a sign that said "Erica, you're the hottest planet on Earth. Homecoming?"

World as in our realm of being

The largest planet in the world is Uranus!

People are stupid don't even bother

You had one lesson

I imagine someone thinking: "Hum, i wonder what is the biggest planet, like, ever..."