Aside from the obvious, a butt slut is also a person who will smoke the last drag of any cigeratte that is not their own.

Usually hated by nicotine addicts world wide
Paddy: "hey man, can i be a butt slut?" *take cigarette and smokes last drag*
by stoz June 26, 2006

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chick who wana get it up da asss
ashley gets fucked in the ass by josh all the time. this makes her a butt slut. now ashley had a lose butt hole.
by VANILLA FACE FUCKER. April 19, 2007

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A homosexual male with frequent tendencies to sit and rotate, on top of another homosexual male of course.
Dave is not a butt slut, he has only slept with 4 guys in a month. Thats not bad!!!
by Wouldnt You Like To Know November 13, 2002

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basicaly, a slut, who either lives in a butt, or likes up the butt. can refer to homesexuals.

related to slut and skank
A. Yeah, that buttslut smells like arse. Probably because she lives in one.
B. Damn, bitch, you like it up the rear, just like my old buttslut.
C. Buttslut is another cool word for skank. :O
by kiwiskill February 24, 2006

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some ugly anorexic chick who wants to get fucked in the ass all day long by her boyfriend... who gets other girls pregnant. usually these people eventually get aids and die. or so we hope.
ashley gets fucked in the ass by her boyfriend josh all day long. JOSH is a manslut and gets other girls pregnant. now josh has aids and ashley doesnt know. also, ashley has been fucked in the ass so many times that she has a lose butt hole! this makes ashley a butt slut.
by VANILLA FACE FUCKER. April 17, 2007

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noun.Gay guy who is basicly a whore, and fucks other gay guys.
Damn! all these butt sluts tryin' to anal-fuck me!
by 'cos December 31, 2004

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A combination of slut, whore and bitch
Tom: she is such a bitch
Jack: nah, she is worse she's a butt slut
by Wtf mpg pro Asdfghjkl July 10, 2016

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