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fanny adams

British  

noun

  1. Often shortened to: f.a..   FA.   SFA(usually preceded by sweet) absolutely nothing at all

  2. nautical (formerly) tinned meat, esp mutton

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of fanny adams

C19: for sense 1: a euphemism for fuck all for sense 2: from the name of a young murder victim whose body was cut up into small pieces.