I first heard of this from a blog post or twitter thread from someone in game development, but can't remember the term they used for it. Basically the idea is: you're designing a level or whatever, and you know that your manager will never just say "yep that's perfect, ship it", they will always want to make their mark on it by going "that's good, but what if you added/removed x?". So from the start you put something in that you know they won't like, but you won't have to feel defensive about cutting it.
What's the term for this? Is there actually a widely-known one or is it only used by the person I'm thinking of?