a crock of shit

a crock of shit

INFORMAL, VERY RUDE
If someone describes something as a crock of shit, they mean it has no value, is of very poor quality or is completely wrong. Frankly, I think the whole poem is a crock of shit. All that stuff about us splitting up, it's such a crock of shit. Note: A crock is a clay jug or storage jar.
See also: crock, of, shit

a ˌcrock of ˈshit

(taboo, slang, especially American English) something that is not true: ‘He told me he was working yesterday.’ ‘What a crock of shit! I saw him shopping in town!’
See also: crock, of, shit