An instance in which several
co-workers, usually within a
bar or restaurant, have engaged in sexual relations or
fellatio with multiple other co-workers, resulting in overlap of sexual partners amongst those co-workers.
John has been
fucking Sally for the last week, but just last week Sally was blowing her
manager, Steve, and John was screwing Steve's ex girlfriend who now works in the
kitchen, and now it's become a "workplace fuckpile."