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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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Bunk and fuck put together into one word, you do the math. Can be used in any way whatsoever, but usually used in negative terms.
Peterson is so bunkfunk.

Dallas' party got cancelled? BUNKFUCK!

Akina got bunkfucked last night.
by TysonP09 August 09, 2008
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