Chicken maybe? It would represent an egg that did exist, but now doesn't.
Also, in the other direction in space time, it's an egg that could have been, but now won't.
Now I want some chicken & waffles
https://en.wikipedia.org/wiki/Chicken_and_waffles
In the breakfast space, I'm afraid, chicken is orthogonal to eggs.
Also, in the other direction in space time, it's an egg that could have been, but now won't.