The idiom "come full circle" means to return to the same point or position after completing a journey or process. It can also mean to complete a cycle or pattern that started at one end and came back to its beginning.

The idiom "wash hands of" means to renounce, abandon or let go of something. It can also mean to disown or disclaim a relationship or situation that one finds distasteful or undesirable.

The idiom "monkey business" refers to activities or actions that are not serious, important, or legitimate. It can also suggest dishonest or unethical behavior. The figurative meaning of the idiom is to describe something that is not professional or appropriate in a particular context.

The idiom "pass the buck" means to shift responsibility, blame, or burden onto someone else, often by transferring an object (such as a dollar bill) from one person to another.

The idiom "smell a rat" means to discover or suspect something fishy or wrong about a situation or person. It is often used when someone has found out that someone else has been dishonest or deceitful.