The idiom "eat words" means to swallow one's words or to retract something that was previously said. It is often used to describe a situation where someone has spoken impulsively or incorrectly and is now forced to admit their mistake by eating their words.

The idiom "goody two shoes" refers to someone who is excessively good, obedient, or morally upright. This person often follows rules and social norms strictly, without any deviation or question.

"A hard nut to crack" is an idiom that means someone or something is very difficult to persuade, convince, or change. It is a metaphorical expression that suggests the person or thing being described is like a tough shell or nut that is resistant to efforts to break it open.

The idiom "raise the bar" means to set a high standard, improve something, or make something more difficult. It can also mean to exceed expectations or challenge oneself to do better.

The idiom "make do" means to manage or find a way to make the best of a difficult situation, often with limited resources or means. It can also mean to make a substitute or do something that is adequate but not ideal.