Let's not go through all that again

Let's not go through all that again.

We are not going to discuss that matter again. (Compare this with Do we have to go through all that again?) Bill: Now, I still want to explain again about last night. Sally: Let's not go through all that again! Sally: I can't get over the way you spoke to me at our own dinner table. Fred: I was only kidding! I said I was sorry. Let's not go through all that again!
See also: again, all, not