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a man who fucks you in the ass without the courtesy to lube up first.
i totaly watched this anal assasin go to town on this guy.

jim is an anal assasin.
by doogy man March 20, 2006
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a homosexual activity, one in which gay men take turns fucking eachother in the ass, using no lube, the first on to cum in the others ass wins, the loser must clean the shit off the winners dick by licking it clean
wow look at Grim and Trusdle those guys totally play anal assasin all night i mean look at they way they're walking and they both have shit breath
by Broyle5k March 16, 2008
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A man who murders ass by stabbing. The attack will happen from behind with the recipient unaware their anus is about to be assasinated.
Sorry about your mom, I heard she fell victim to an anal assasin.
by Uptheshambles April 18, 2018
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