The Thersites of “Fingal;” brave even to rashness.
Blow for blow
or claw for claw, as Conan said.
Conan made a vow never to
take a blow without returning it; when he descended into the infernal
regions, the arch-fiend gave him a cuff, which Conan instantly
returned, saying “Claw for claw.”
“ `Blow for blow,' as Conan said to the devil.” —Scott Waverley,
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894