domain scientist

What machine learning and computer science professionals call scientists in any field but their own.

The model is confused, I guess we'll have to find some domain scientist to help us understand the problem we're solving.

shit flapper

A dried piece of dog shit that accumulates on near the ass of a dog. The shit flapper will open and close as the dog has to fart, or take an additional shit, much like the cover on the smokestack of a diesel truck.

I've got to cut the shit flapper off my dogs ass, it's starting to crumble onto the floor.