Wiktionary
fuck all
det. (context idiomatic vulgar English) nothing at all or very little. pron. (context idiomatic vulgar English) nothing at all or very little.
WordNet
fuck all
n. little or nothing at all; "I asked for a raise and they gave me bugger-all"; "I know sweet Fanny Adams about surgery" [syn: bugger all, Fanny Adams, sweet Fanny Adams]
Usage examples of "fuck all".
You are fucking Laura Hughes, and Im sure you would fuck all the acknowledged Kennedy sisters and old Rose Kennedy herself if you thought it would ingratiate you with Jack.