It happened that a slender fox had made her way through a narrow crack into a coffer of grain. After eating her fill, she wanted to get back out again but her swollen body prevented her from doing so. At a safe distance the weasel said to her, 'If you want to get out of there, you better be as thin when you go back through that narrow crack as you were when you went in!' (Aesop's fables)
