If you're ever doubting yourself, watch this video and you'll feel like the smartest person ever. Specifically watch the bit starting at minute 7:18 when two QVC hosts (Shawn Killinger and designer Isaac Mizrahi) get into a full-on debate about whether the moon is a planet or a star. Even the model can't help but laugh and put her hands to her face in shame, and one of the funniest parts comes when Mizrahi says, "The moon is such a planet, I can't stand it."

Here's a snippet:

Killinger: "Isn't the moon a star?"
Mizrahi: "No, the moon is a planet, darling."

Killinger: "The sun is a star. Is the moon really a planet?"
Mizrahi: "Well, the moon is a planet, honey. It's a planet."

Killinger: "Don't look at me like that. The sun is a star. Is the sun not a star?"
Mizrahi: "I don't know what the sun is."

Killinger: "The sun is a star, isn't it?"
Mizrahi: "We don't know what the sun is."

News flash: you're both wrong. The moon isn't a star or planet but a natural satellite.