#ffs

What does "ffs" mean?
FearFactorySLCRocks, fashion_for_summertime, FelizFindeSemana, FreshFruitSalad, FluffysFruitSalad, firstFemaleStig, FoodieFridaybyShift, FoodForSale, FitFormStyle, face_from_syria, FlexFitStrong, FuckryFreeSituations, FireFightingSchool, FlashFridaySale, FrameFocusShoot, FollowForStyle, follow_for_shoutout, FullyFlaredSkirt, ForFuckSakes, FancyFontsShop, FireFromSky, free_fitness_shoutouts, FotoFunSplit, FenerbahçeFanaticsStuttgart, FitFareSkillet, food_for_soul, FitForSpeed, FaceFlawlessSkin, FreshFriedSeafood, freshFaceShawty

ffs-a 4919 ffs-s 3442 ffs-u 1522 ffs-alute 29244 ffs-t 992 ffs-f 578 ffs-ky member 8713 ffs-ports 3939 ffs-quad 3086 ffs-tl 1092 ffs-mgm 1704 ffs-hop 1348 ffs-photoaday 1595 ffs-dc 459 ffs-o 156 ffs-k 63 ffs-tory 767 ffs-mv 331 ffs-cmon 575 ffs-outhfl 703 ffs-umm15 416 ffs-uplementos 866 ffs-eries 566 ffs-hion 207 ffs-dmsomgs 37 ffs-hops 507 ffs-lougiveaway 207 ffs-uhamka 409 ffs-howdown 467 ffs-quat 306 ffs-mata 323 ffs-man 325