Skeleton in the closet. 家丑
Don't get on my nerve! 别把我惹毛了！
A fat chance. =A poor chance. 机会很小
I am racking my brains. 我正在绞尽脑
She's a real drag. 她真有点碍手碍脚
Spacingout = daydreaming. 做白日梦
I am so fed up. 我受够了！
It doesn't go with your dress. 跟你的衣服不配。
What's the point? = What are you trying to say? 你的重点是什么？
By all means = Definitely. 一定是。
Let's get a bite. = Let's go eat. 去吃点东西吧！
I'll buy you a lunch (a drink; a dinner). = It's on me. = My treat. 我请客
Let's go Dutch. 各付各的
My stomach is upset. 我的胃不舒服
diarrhea 拉肚子
吃牛排时，waiter会问“How would you like it?”就是问“要几分熟”的意思，可以选择rare，medium或 well-done。
I am under the weather. =I am not feeling well. 我不太舒服!
May I take a rain check? 可不可改到下次？(例如有人请你吃饭，你不能赴约，只好请他改到下一次。)
I am not myself today. 我今天什么都不对劲!
Let's get it straight. 咱们把事情弄清楚!
What's the rush! 急什么!
Such a fruitcake! 神经病！
I'll swing by later. =I'll stop by later. 待会儿，我会来转一下。
I got the tip straight from the horse's mouth. 这个消息是千真万确的（tip指消息）!
easy as pie = very easy = piece of cake 很容易。
flunk out 被当掉
take French leave 不告而别
I don't get the picture. =I don't understand. 我不明白。
You should give him a piece of your mind. 你应该向他表达你的不满。