FCDM Share definition Flag "First-Class Douche-Magnet": A nice girl who attracts douchebag after douchebag, but never any decent guys. Did you hear he used her? She really is a FCDM! FCDM by The OG FCDM November 1, 2011 0 0 Get merch Get the FCDM mug. Buy Now — $32.95 See more merch