Top Definition
A Morbidly obese child who smells like shit and cannot get layed or even talk to women successfully. as a result of that he is a very violent motherfucker and repeated says the word "nigga" even though he is white. a "Musty Brown" will talk a lot of shit but when it comes down to fighting all he knows is the legendary move the "WINDMILL" what a fag right?
Austin:"MAAAAAh i was smoking all dat good weed nigga"

Kyle: "Man shut the fuck up Musty Brown"
Austin: " MAAHhh nigga imma beat the brakes off you"
Kyle: "you won't do shit you fat motherfucker"
Austin" mahh you lucky i aint wanna figght today!"
by Miranda i like yo shoes March 26, 2013

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