Usually a more pleasant way of saying "fuck all" or an alternative way of saying "nothing at all".

"Sweet FA" is an even lazier way of saying it.
PersonA: So, what have you done today?
PersonB: Sweet fanny adams, that's what.
by Kringlebeast March 11, 2008
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Fanny Adams, bless her sole was found raped and dead under a hedgerow in England in the 19th century.
Now used as a term when refering to a person not having much, not holding a lot.
When he showed his poker hand he had 'sweet Fanny all'.
by Trevor Stapp August 23, 2005
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