Speaking on the DC Superstar Creators panel at Kapow! Comic Con in London, the Action Comics writer said that editor Janelle Siegel had some difficulty with the slang used in his Batman spinoff miniseries.
He said that he gave her the translations "to convince her it was suitably dirty". He called Knight and Squire "my favourite thing I've ever done in comics".
The six-issue miniseries starred the 1950s characters reintroduced during Grant Morrison's run on Batman. It featured 130 newly created British superheroes and villains and references to British culture and the London comics scene.
Cornell confirmed that there were no current plans for a follow-up series. "I'm very pleased that Squire is appearing in Batgirl soon."
The Knight and Squire paperback collection is due for release on June 29.
> Read our latest Comics news