a phrase commonly used by white people trying to sound black. they will typically use outdated black terms along with this phrase hoping to impress their cool half black but really white/mexican "friends". the usage of this term will most likely result with the violator shanked or beaten. or screaming teeheenaynaysha.
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Tiffany: yo, bitches, what up?
Jennifer: omg. shut up Tiffany before you get yo ass beaten!
Tiffany: there be a fat cow mutha fucka up in yo ass.
Jequarius: bitch, whachu say?
Tiffany: TEEHEENAYNAYSHA!!!!!!
Jennifer: omg. shut up Tiffany before you get yo ass beaten!
Tiffany: there be a fat cow mutha fucka up in yo ass.
Jequarius: bitch, whachu say?
Tiffany: TEEHEENAYNAYSHA!!!!!!
by thecool3stcrack3rs March 18, 2009
Get the fat cow mutha fucka up in yo assmug. 1. A profane insult thrown at those who express rudeness to an individual.
2. Someone who takes pleasure in eating excrement, and sucking a penis.
2. Someone who takes pleasure in eating excrement, and sucking a penis.
by H to the muthafuckin Azel January 10, 2004
Get the mutha fuckin shit eatin stupid dick sucking fuckermug. 
Phrase commonly used by angery negros.
Threat of death by instrument commonly tucked under nuts; pertains to no specific race; often used by white people who watch a lot of BET.
Threat of death by instrument commonly tucked under nuts; pertains to no specific race; often used by white people who watch a lot of BET.
by XshadowsX April 26, 2005
Get the Blang blang mutha fuaka I\'m bout to cap yo\' dumb punk bitch shit ass nigga!mug. 
Get the Mutha fanuggettmug. It is another way to say word to my mother, Which is a way of saying you would put it on your mother's life.
by _Dj_IXCLAZZ November 3, 2023
Get the wurda my muthamug. by Coo bitch November 25, 2019
Get the Coo Mutha Fuckamug.