A person that has sex with a female that has given birth to a child.
John: You do know that woman that wants you to marry her has a house full of children don't you?
Bubba: No that might be why she was so eager to be with me and I had sex with her last night too!
John: You did? You mother fucker!
via giphy
by Billy BullSchitter June 03, 2016

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Someone who surpasses the boundaries of run-of-the-mill assholery.
"That stupid, angry bigot son-of-a-bitch who said some racist bullshit at his granddaughter's birthday party and then started a fight with his son-in-law's brother when he called bullshit - that vile shitbird is a real motherfucker."
by erielhonan November 10, 2015

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1.A very annoying, obnoxious, mean person. Similar to words such as Fucker, Douchebag, Asshole, Jerk etc.
2. A person who fucks their mother.(Literal meaning)
Bob:That guy called me words and mocked me!
Jack:That guy must be a MotherFucker!
(Note: No offense meant for the usage of names:)
by TheWarProfessor May 20, 2015

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An individual who partakes in sexual intercourse with female human creators.
John just knocked up another mother, what a motherfucker!
by the J Man February 27, 2015

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A term commonly used in jail by inmates to describe other inmates who cannot be raped, assaulted, or otherwise hurt due to the fact that they can, in one way or another, avoid or escape their advances.
That white boy is a Motherfucker, we were going to take 'em to the pit but he snitched to the guard.
by SQBastard April 25, 2011

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An insult for someone. On a more literal not, it means a person who has had sexual intercourse with a mother, be it his own or someone else's.
Aniswag: I banged your mother last night
Aniswag II: You are such a motherfucker
by Aniswag May 29, 2016

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Samuel L. Jackson's favorite word.
"English, Motherfucker! Do you speak it!?!
by ChrisLmusic96 February 19, 2015

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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