Eat humble pie

吃掉一个谦卑的派，难道说还有傲娇派不成？这个习语的意思其实都体现在了中间那个单词上，和吃派并没有神马关系，它表示低头认错。

例：After boasting that his company could outperform the industry's best, he's been forced to eat humble pie.

之前他还夸夸其谈说他的公司比行业中最棒的还棒，如今也不得不低头了。