When two sets of partners engage in sexual intercourse at the same time. One pair fuck on the top bunk while the other pair fucks on the bottom, respectively
Did u hear that Paul and Michael bunk fucked with Strangie and Cris?
by stangiemw2 December 13, 2009
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Rico: Did you see Deena's hoop nose ring? It totally clashes with her blonde hair. It looks Bunk as Fuck.

Tito: Yea, she don't look slammin' like Samantha who has a hot stud nose ring.

RIco: Bleep Deena. Let's go hang with our dego brothers.
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