Green’s Dictionary of Slang

B.F.D. phr.

also b.f.d.
[abbr. big fucking deal; euph,. as big fat deal]

(US) so what, I should care less.

[US]Current Sl. II:2 5: BFD, n. Big fat deal (ironic).
[US]S. King Stand (1990) 473: BFD, as they used to say: big fucking deal.
[US]Eble Campus Sl. Spring 1: b.f.d. – big fucking deal.
[US]P. Munro Sl. U. 35: I got another C on my math test — B.F.D.!
[UK]J. Mowry Way Past Cool 12: ‘I first, ’member.’ ‘BFD! By one stupid little minute!’.
[US]J. Stahl Plainclothes Naked (2002) 214: You’re thinking, ‘Oh, here’s another badass with a .357. BFD — Big Fucking Deal.’ One on every corner, right?
[US]C. Eble (ed.) UNC-CH Campus Sl. Spring 2014.