I suppose this could be the question of the day (QOTD).
How could I possibly gain 4 freaking pounds overnight?
Why don't I ever LOSE 4 pounds overnight?
It's got to be fluid retention. It's happened to me so many times I've lost count, but every time I freak out. This is just not right. It makes me want to go out and buy a new bathroom scale. Then I think, "What if the new scale measures even higher?"