An intriguing question

Why oh why is it that Easter eggs, even after they have been partly consumed and their circumference decreased, will NOT fit back into the foil wrappers they came in? Is it some sort of conspiracy? Does the foil shrink in between unwrapping and rewrapping? Or am I just an incompetant idiot*?

I apologise for the split infinitive, but I feel strongly about these things.


*This question does not require an answer.