YFDD Share definition Flag Abbreviation used in e-mails at Caremark. Stands for Your Funny Deb Dog. Deborah: seriously...I can no longer have babies if that picture is for real. eewwww. Alisa: YFDD! YFDD by Matt March 24, 2005 0 0 Get merch Get the YFDD mug. Buy Now — $32.95 See more merch
