plonker

English

From plonk + -er.

plonker (plural plonkers)

(UK, Ireland, Commonwealth, slang, derogatory) A fool.
- 2020 May 20, Jemaine Clement, “The Return” (: from the start), in What We Do in the Shadows‎^[1], season 2, episode 7, spoken by Nadja (Natasia Demetriou):
  “You kept the hat! You bloody plonker!” “Fuck me.” “And now look at you, bouncing off the cars like a bouncing idiot.” “Fucking hell!” “Is he gonna be alright?”
(UK, Ireland, Commonwealth, slang) A penis.
(UK, Ireland, Commonwealth, slang, dated) A man who sanctions sexual relationships between his girlfriend and his male friends.^[1]
(slang) Something bad or inferior.
Synonyms: clunker, flop
- 2015, Spencer Leigh, Frank Sinatra: An Extraordinary Life:
  Frank advised him, 'Stay away from cheap songs and the rest will follow.' Bennett did record some plonkers but his overall level of good to bad has to be higher than Frank's.
One who plonks. (Can we add an example for this sense?)

fool

^ BBC History- The WordhuntWordhunters noticed that the OED's earliest two quotations in their entry for 'plonker' were misplaced. In the original 1966 citation from All Neat in Black Stockings by J Gaskell, the word refers not to a 'foolish, inept or contemptible person', but to a wholly different sense of the word, meaning 'a man who sanctions sexual relationships between his girlfriend and his male friends'.