Fuckmiliar Share definition Flag 1. The word that describes a person you didn't realize you knew until after you've had sex with them. 1. I accidentally slept with my ex-wife's cousin; I knew that woman looked fuckmiliar! Fuckmiliar by MagicMikeMoody August 5, 2017 0 0 Get merch Get the Fuckmiliar mug. Buy Now — $32.95 See more merch