bihtfud Share definition Flag Stands for, “Bitch I hope the fuck you do!” Used by some people on the internet, and is a somewhat popular internet meme. Daughter: “Hey mom can I borrow $100? ” Mom: “BIHTFUD! You know money is tight around here!” bihtfud by Quantix48 July 23, 2017 0 0 Get merch Get the bihtfud mug. Buy Now — $32.95 See more merch