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a relationship primarily sexual in nature; akin to but less transient than (and thus not necessarily synonymous with) booty call, fuck buddy, slam piece, friend with benefits, or hook up; a fucktionship offers all the benefits of a legitimate relationship but without the hang-ups or social acceptability
Yeah, Ma, he/she's definitely my boy/girlfriend..

*to friends* Nah we're in a fucktionship tho.
by imjusthereforthisdef October 10, 2016
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