milft'kay Share definition Flag When a homosexual notices a very sexualised milf, and says "milft'kay" in order to let the milf in question know that she is in fact a very sexy milf. "I see me a milft'kay" milft'kay by Milftkay January 15, 2019 0 0 Get merch Get the milft'kay mug. Buy Now — $32.95 See more merch