TFNB Share definition Flag verb, meaning to titty-fuck a girl whose initials are NB. the pleasure is amazing. women who could qualify for tfnb: natasha bedingfield, nicole blake yo colby, i wanna tfnb so bad right now TFNB by tfnbmamma November 24, 2010 0 0 Get merch Get the TFNB mug. Buy Now — $32.95 See more merch
