The literal fucking of one's own mother.
S1: Hey man, did you hear Peter-Anthony fucked his mom again last night?

S2: Yes, I heard! He never ceases to amaze me of what a sick mother fucker he truly is.
by cujo31 March 17, 2012
One who yawns with his (or her) jaws wide open, to the extent you can diagnose tonsillitis from the other side of the room.
"I am so bored by sitting in this VIP lounge, I am yawning like a motherfucker bro!"
by pogopogo May 19, 2010
Expresses admiration.
Yo, that Toronto nigga is a motherfucker at basketball.
by Toronto Raptors January 27, 2008
1.Respect less person with no attitude or a fool
2.Also used to express a form of respect for someone
3.Also term of affection
4.Someone who is hard, tuff, strong, and heavy
5.Also something unpleasant and shit like that
Motherfuckers act tuff but they aint
by Aniraban November 09, 2007
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 02, 2007
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
one hoo fucks his/her mother
by debbie March 16, 2003

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