Why was the Thanksgiving soup so expensive?

This little holiday groaner is a classic example of a pun, where the humor comes from a word having two different meanings. The punchline cleverly plays on the homophones "carrots," the orange root vegetable, and "karats," the unit of measurement for the purity of gold. Your brain is expecting an answer related to food, but it gets one related to precious metals, creating a silly and unexpected mental image.

The Thanksgiving setting provides the perfect cover for this bit of wordplay. Carrots are an absolute staple of the autumn harvest and a key ingredient in many traditional holiday dishes, especially soups and stews. The joke takes this common, inexpensive vegetable and swaps it with the ultimate symbol of luxury—24-karat gold, which is pure and therefore incredibly expensive. It’s the absurd collision of the mundane and the magnificent that makes this simple joke shine.