Top Definition
Sexual relations between two people who live on the same floor. Typically used in the context of college dorms. Generally frowned upon.
Jim and Mary have been engaging in floorcest!
by BKred January 05, 2004
Sexual activity with those on your residence floor in a college dorm. Often leads to an ex-boyfriend/girlfriend living on your floor that you may or may not run into when you want to least (ie. drunk at 3am sick on the way to the bathroom)
Those two love floorcest, these walls are paper thin you know.
by merfoman January 30, 2006
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