My Grandmother used this phrase whenever she didn't want us to know what something was.
Example: What am I getting for Christmas? Her answer was "Cat's fur for kitten's britches." meaning none of your business. Grandmom was born in 1905 so it goes back at least that far.
by Joe, Jr. December 24, 2009
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1. A U.S. Southern pun which means "Don't question me. Do what I say and use proper English."
Papa: Eat your food.

Eric: What fer?

Papa: Cat's fur to make kitten's britches. That's what fer!
by InfamousSulla July 02, 2010
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Papa: Eat your food.
Eric: Why?
Papa: Cat's fur to make Kitten's britches, that's why!
by Eric A. S. September 07, 2005
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