Definitions by Anonymous Linguist 57

bottom-feeder 

A male or female who hooks up with their friend's ex-boy/girlfriend because they are easy access as a relationship is already established.

Tim and Steve were quick to talk shit about Emily, but when she and Rick broke up the two bottom-feeders even quicker to move in on her for an easy lay.

bottom-feeder by Anonymous Linguist 57 February 22, 2009