TBFU Share definition Flag acronym. Too Bad For You. Literally "Too Bad For U" Also seen as TBFY, 2B4U, and TB4U. Guy 1: I can't believe it, my girl cheated on me when she was drunk!! Guy 2: hahaha, TBFU!! TBFU by Shifty Eyed Goat April 28, 2006 0 0 Get merch Get the TBFU mug. Buy Now — $32.95 See more merch
