A person, whether being female or male who has an unusual likingto anal copulation, this person loes to be butt facked all night long. The term originated from 17th century France among the snuff dens, where a French crack head would take home a prostitute and "wear them out" normal copulation with the vagina got old, due to its losseness and other holes were sought out. A nobleman discovered the firmness of the "bunghole" and only had sex with that from then on. These prostitutes where thus known as "ass junkies"

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A promiscuous gay male ...

Or
An ignorant person