Someone who has given birth.

Your Birther would be your mother.

Has nothing to do with Barrack Obama; yet is still used in that context.
Guy 1:Wild party last night
Guy 2:Oh hell yeah
Guy1: My birther's gonna be pissed though.
Guy 3: Shit man, That sucks.
by Sha-Boom August 12, 2009
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A term used to label individuals who wish to maintain and assure that the presidential-requirement of being born on American soil is adhered to.
Birthers hold that Arnold Swartzenegger would not meet this presidential-requirement because he was born in Austria.
by JayDee305 December 30, 2010
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A conspiracy theorist who believes that Barack Obama is ineligible for the Presidency of the United States, based on any number of claims related to his place of birth, birth certificate, favorite birthday, or whether or not he has heard the song Africa by Toto.
"Did you know that Barack Obama's parents concealed the location of his birth because they knew he would grow up to be President? What? Of course it makes sense, I'm a birther!"
by Brent Elliott December 9, 2008
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birth-er
noun

A person who derives sexual pleasure from covering him- or herself in fresh placenta while having intercourse with a woman immediately after she has given birth.
Sane person #1: Did you hear that guy on Fox News who kept insisting Obama was born in Kenya?
Sane person #2: Don't listen to him. He's a birther. Those people are into some really sick stuff.
by builtingirl August 4, 2009
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A term for the frothy liquid mixture formed in the vagina when a baby is born. It is a foul smelling combination of maternal blood, vernix, and meconium (baby poop) that drips down over the mother's anus during the third stage of labor. It is thought to be a contraction of the words "birth" and "lather."
Nurse, would you please wipe that birther off the crack of my patient's ass?
by drsteevo July 29, 2009
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When someone who was once known for promoting birther conspiracies suddenly gives up and admits that Obama was born in America.
Donald Trump has now become a reformed birther in order to convince people that he is not a racist but now he is trying to blame the whole birther nonsense on Hillary Clinton.
by Just_sayin' September 18, 2016
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