pillock

In the 16th century, the meaning was "penis".[1] Probably from pillicock (“penis; boy, man”), presumably akin to the slang term dickhead (“inept fool”).[2] Alternatively, from the same basis as pillicock (compare regional Norwegian pill (“penis”)) + the diminutive suffix -ock.

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pillock (plural pillocks)

1. (UK, Ireland, Australia, New Zealand, derogatory, slang) A stupid or annoying person; a simpleton; a fool.
   • 1970 October 27, Monty Python's Flying Circus, The Butcher Who is Alternately Rude and Polite‎:

     What is it now, you great pillock?

   • 2021 March 19, Bosnian Ape Society, 3:55 from the start, in Is Your Car Safe From Supermaneuverable Air-Defense Fighter Aircraft?‎, archived from the original on 7 August 2022:

     Take your Typhoon up there and swat the annoying mosquito out of the sky by challenging the infantile pillock to a classic World-War-II-era dogfight like a real man, to show them who the real king of European airspace is.

• (Britain, Ireland, Australia, New Zealand, derogatory, slang, stupid or annoying person): wazzock, plonker

• Pollick, lip lock, lip-lock, liplock