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The act of performing analingus on a woman while fingering her; so named because one keeps their hand in the mouth of a french horn while they play; sister act to the rusty trombone, which is likewise named after a brass instrument.
"I gave my girlfriend The French Horn for Valentine's Day."
by ub|Philgamesh February 22, 2012
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"Man fuck Donald trump, he wants to build a wall and don't pay taxes!!"
by January 30, 2017
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