What is the origin of the idiom "see the back of someone or something" and when to use it?

The origin of the idiom "see the back of someone or something" is not definitively documented, but it likely stems from the idea that when someone leaves or departs, one can see their back as they walk away. In this context, seeing the back of someone or something signifies the end of their presence or influence. It is typically used in informal conversations and less formal writing to express relief or joy when parting ways with a person, situation, or thing that has been causing difficulties, annoyance, or discomfort.