Means Heroin and is also a famous song by Guns N Roses on their debut album "Appetite for Destruction". When they are saying "Dancing with Mr. Brownstone" it means they are "Shootin Heroin"
"We Been Dancin' with Mr. Brownstone
He's been knockin he won't leave me alone"
by StraightUpWestSide June 17, 2005
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Slip your arm in a bindle and fill your syringe with Mr. Brownstone.
by C. Filipe Medeiros May 21, 2005
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While having anal sex you cum inside your partners anal cavity then perform oral almost instantly sucking out your own semen only to kiss your partner to put it in their mouth.
I fucked Tina last night and gave her the Mr Brownstone!
by Mr brownstone September 20, 2021
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Dancing with Mr.Brownstone refers to doing Heroin. There is also a song about this by an American Rock group known as Guns N Roses.
We've been dancing with Mr Brownstone he won't leave me alone drugs heroin guns n roses rock america Dea
by Kervy May 1, 2015
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guns n roses slang for doing heroin

...HEROIN SHOOTAGE BIOTCH
"hey, where have you been?"
"slam-dancing with mr. brownstone in the 7/8 bathroom"
"yeeah man! damn, share the goods i need a fix"
by geebongee June 21, 2006
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