How is “a crock of shit” used?

In Forrest Gump (1994), one line is: “God is listening? What a crock of shit.”

Which movie is “a crock of shit” from?

The clip at the top of this page is from Forrest Gump (1994).

something that is not true

taboo · American · Heard in 5 moviesPlay Slang

Oxford100% of films
something that is not true
That's a crock of shit-- white outfits.
God is listening? What a crock of shit.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

God is listening? What a crock of shit.

Said in 6 films · #1