The idiom "bring up" is a phrasal verb that means to mention or discuss something, especially at a particular time or place. It can also mean to raise or support someone or something.

The idiom "hit the nail on the head" means to make an accurate or precise statement, to describe something exactly as it is. It can also mean to solve a problem or perform a task very well.

The idiom "black out" means to lose consciousness or to become unconscious due to lack of oxygen, injury, illness, or other reasons. It can also refer to a power outage that causes the lights and other electrical devices to go off.

The idiom "hope for the best, but prepare for the worst" is used to express a situation where one wants to have a positive outcome but is also realistic and cautious about the possibility of negative outcomes.

The idiom "blue-collar" refers to a person who works in physical labor or manual occupation, typically characterized by wearing blue-colored clothing.