Firsthand accounts of events or circumstances.
Please elaborate on your question
Answer:
John said that he could care less if he doesn't get the job.
Explanation:
An idiom can be regarded as phrase or expresion which it's culturally understood meaning is different from the denotations of the composite words. The phrase or the expression has a meaning that is entirely different from the individual words that made up the phrase.
The saying means what is considered good is in fact bad and what is considered bad is actually good.
an example could be you trust someone and they seem to be a good person but looks are deceiving and they turn out to be bad