Green’s Dictionary of Slang

not worth a... phr.

[14C+] in addition to the most popular combs. listed separately below, there are a number of terms listed at the relevant n. (e.g. not worth a bumper under bumper n.4 ), plus a number of less common phrs. are listed below here, all meaning worthless, useless (and occas. used without ‘not’ to mean the same thing), e.g. that’s worth a whoop in hell; see also the adv. phrs. listed at worth a... phr.; examples are listed alphabetically rather than by date and the dating for these combinations can be anything from mid-16C to 1990s+.

In phrases

...a bean
...a button
...a cracker
...a dodkin (also ...dotkin)
...a farthing
...a Flanders pin
...a fly
...fudge
...a gnat
...a hang
...a hoot
...a leek (also ...two leeks)
...a mag
...a make
...an oyster
...a pound of piss
...a plum (also ...two plums)
...a preen
...a rush (also ...a bulrush)
...a snap (of one’s fingers)
... a snuff
...a tinker’s cuss/damn
...a walnut shell
...a whoop (in hell)
...shucks
...three skips of a louse