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 "cloak and dagger" refers to a situation or event where there is deceit, secrecy, or hidden motives involved. It can also suggest that something is not as it seems on the surface and that there may be underlying conflicts or tensions at play.

The idiom "dirt cheap" means an item or service that is very inexpensive, often to the point of being almost free. It can also imply that the item is of low quality or value.

The idiom "bear the brunt of" refers to taking the heaviest or greatest amount of something, usually a negative experience, responsibility, or punishment. It can also mean enduring or surviving a difficult situation or adversity.

The idiom "go bananas" means to become extremely excited or crazy. It can also mean to lose control or behave recklessly. The phrase is often used to describe someone who has gone insane or is behaving erratically.