Omg what's the bfd Share definition Flag Oh My god what is the big fucking deal in a rude manner usually when your saying who cares Dude1: Hey i had a sandwich earlierDude2: OMG what's the BFD Omg what's the bfd by JUDGEMENTAZDUDE October 4, 2009 0 0 Get merch Get the Omg what's the bfd mug. Buy Now — $32.95 See more merch