This expression sounds like a guessing game about food.

Show Nothin.

I can't find anyone to watch my cat while I'm away, and I have asked everyone You haven't asked me What am I?

Chopped liver.

Jonathan.

The last time you watched my cat, you put her in a cat prison.

It was a pet spa.

We use this expression when we feel upset at being overlooked or ignored.

It's another way of saying, What about me?

In parts of America, chopped liver is traditionally served as a side dish and not the main course.

So it's a food that is more easily for gotten, and that's English in a minute.