noun: a person who "fucks" or has sexual intercourse with ones mother.

also known as an obscenity used excessively when greatly intoxicated with alcohol
as said while going back and forth from throwing up in the bathroom-
"you mother fucker what the fuck are you doing here?i fucking hate this you mother fucker.mother fucker this sucks"
by Dilara Oz January 3, 2007
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when a man almost completely undresses in front of another man.
"During the show, the vocalist mother-fuckered us because it was so damn hot in there."
by h00t_n_h0lleR September 18, 2005
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a man/woman who fucks some ones mother.
is used in a diss towards some one.
you are a motherfucker. or
fuck you, you mother fucker,
go fuck your mother.
by ben haigh June 11, 2006
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a person who is highly effective in accomplishing tasks, assignments, doing the bosses dirty work, etc. plain and simple the motherfucker is The person who gets things done !
having completed a sensitive task the manager said to Jeffrey, "Jeffrey you are The Mother fucker!"
by Zloyobar August 24, 2008
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now a common versatile term used to describe almost every situation that we are involved in, or was involved with, may be involved in.
I can be used as a replacement fullstop , a commer and definitly an explenation mark.
being on home detention drives you to doing random motherfuckn shit on internet at ungodly times of the motherfuckn nite, its a motherfucker.
On reflection going to jail was more of a mother fucker, as you dont have access to do random motherfuckn shit like this.
I never want to put myself in this motherfuckn dumb situation as it turns your life into a real motherfucker.
I even got some motherfuckn tattoos put on my motherfuckn self to remind me to stop being such a dumb motherfuckn MOTHER FUCKER
by Argononius January 4, 2011
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Mother Fucker is a word to call someone to make them feel bad and it is also used to show someones anger. It is also use to tell some that they had sex with a mom. It is a bad word that you shouldn't use.
"Your a Mother Fucker!"

"You have sex with a lot of moms you Mother Fucker."
by maxextra4355 February 23, 2012
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A term used to insult someone who is annoying
goofydave is a mother fucker. he never listens when i tell him stuff
by David November 17, 2003
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