https://en.wikipedia.org/wiki/Polari
Polari is a mixture of Romance (Italian or Mediterranean Lingua Franca), Romani, rhyming slang, sailor slang and thieves' cant.Later it expanded to contain words from the Yiddish language and from 1960s drug subculture slang. It was a constantly developing form of language, with a small core lexicon of about 20 words, including: bona (good), ajax (nearby), eek (face), cod (bad, in …