Idiom of the day :- swallow something hook, line, and sinker / (To) swallow something hook, line, and sinker

Idiom of the day :- swallow something hook, line, and sinker / (To) swallow something hook, line, and sinker

Usage, examples and definition of the Idiom :-

To believe something (usually a lie) completely. ex. “Margaret told him a flat-out ( = complete and utter) lie and he swallowed it hook line and sinker.”