The idiom "accidentally on purpose" means that something was done intentionally, but it was presented as an accident or a mistake. It suggests that the person responsible for the action had planned it beforehand but didn't want to admit it.

The idiom "bona fide" means something that is genuine, true, or valid. It is often used to describe a document, contract, or other legal documents that are meant to be authentic and not forged.

The idiom "late unpleasantness" refers to something unpleasant or unwanted that happens after a certain point of time has passed, often when it is too late to do anything about it. It can also imply a sense of disappointment or frustration that things didn't go as planned.

The idiom "curry favor" means to do something or behave in a certain way in order to gain approval, support, or favor from someone. It can also mean to seek or win someone's approval, support, or favor by doing something for them or by being pleasing to them.

"The die is cast" is an idiom that means a situation has been decided or finalized, and there is no going back. It suggests that the outcome is predetermined and cannot be changed, even if one tries to alter it.