Green’s Dictionary of Slang

(US) unpleasant, disgusting.

2001		(con. 1964–8) J. Ellroy Cold Six Thousand 251: Those farkakte goyim jailers don’t know from good nova lox.
2004		Mad mag. Sept. 41: Facacta people who believe that are all meshugga goyim.
2023		(con. 1962) J. Ellroy Enchanters 247: ‘What’s the furkakte punch line?’.