As a noun, a kid is a child or a young person. As a verb, to kid means to joke with someone or tease them in a playful way.
From Old Norse “kith” or related forms meaning “young goat”. The use for children started as slang and then became common informal English.
It’s funny that the everyday word for a child comes from baby goats. The playful, jumping energy of goat kids probably helped the word stick. It’s a reminder that language often compares people to animals, usually in affectionate or vivid ways.
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