("throw it in the pile" or "just throw it on the pile" are also acceptable variants)
I have seen this expression being used a lot. Based on context and intuition, I figured it has an idiomatic meaning, something like this. "It" refers something that should normally be significant, but this idiom is saying that we already have so many of things like "it" that "it" is no longer important. Here, "it" can refer to any kinds of thing, physical objects, facts, abstract concepts...
I tried searching around, but all I get is a whole bunch of different places that use the same expression. This affirms the fact that this is a common idiom, but make it hard to figure out the source.
I tried to search on the idiom dictionary but got nothing.
So does anyone know the source for this? Also, is my interpretation of the phrase correct? Thank you.
(I have also seen visual gags invoking this idiom as well: a character in movie or cartoon casually throw something valuable - like gold, or medal - into a big pile of similar stuff)
You can find plenty of examples by just searching for the phrase, but here is a random webpage just to make it concrete: https://bookmachine.org/2012/04/05/pottermore-sells-1-million-in-three-days-rowling-instructs-minions-just-throw-it-on-the-pile/