Green’s Dictionary of Slang

(orig. US) a useless, unpleasant event or experience; a lie; also attrib.

1948		(con. 1944) N. Mailer Naked and Dead 107: Which [statement] was a crock of the well-known article.
1953		L. Uris Battle Cry (1964) 44: Oh yeah, that’s a crock.
1957		‘Weldon Hill’ Onionhead (1958) 62: [T]he crock haircut he hadn’t wanted in the first place.
1964		J. Baldwin Blues for Mister Charlie 34: She said it wasn’t as tight for a black man up there as it is down here. Well, that’s a crock.
1977		C. McFadden Serial 60: That’s a crock, Vivian.
1983		N. Heard House of Slammers 121: That’s a crock [...] a stinking, full-to-the-brim crock of unburied cat shit.
1997		C. Hiaasen Lucky You 108: ‘It’s a lore, Arthur. That’s all.’ ‘A crock is more like it.’.
2002		J. Lerner You Got Nothing Coming 194: Felonious apple smuggling — what a crock!
2005		L. Redhead Rubdown [ebook] ‘I think it’s great that you have such respect for Alex’s friendship.’ [...] What a crock.
2010		(con. 1973) C. Stella Johnny Porno 121: You believe that crock?