The idiom "lower the bar" generally means to make something easier or less difficult. It can also mean to accept or tolerate something that is considered inferior or below standard.

The idiom "do justice to" means to describe something or someone in a fair and accurate way, especially after it has been experienced or observed. It can also mean to criticize or judge someone or something harshly.

The idiom "lead astray" means to cause someone to make a mistake or take a wrong path, often intentionally or unintentionally. It can also mean to lead someone into temptation or corruption.

The idiom "son of a gun" is commonly used as an exclamation to express surprise, astonishment or shock. It's often used when something unexpected happens or when someone behaves in a way that is considered unacceptable or abhorrent.

The idiom "make like a tree and leave" is an expression that means to go away quickly or to disappear. It can also mean to behave as if one does not care or to act indifferently towards something or someone.