A secret dwelling (house or apartment etc) that nobody in particular lives in but the rent/bills are shared by a group. The purpose is a safe place to take someone for sex outside of a relationship. Rent, utilities is split up but no one person actually lives there, its only for discrete hook ups.
I have a new side chick, I need to use the bun shack for a few hours this Friday.
by Poochielou August 29, 2020
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