14. Finger
How many fingers does each of your hands have? Now let's name them in English from the smallest: the little finger, the ring finger, the middle finger, the index finger and thumb.
Each finger has its own part to play. If your fingers are all thumbs (笨拙), that is too bad. That means you are very clumsy.
15. Thumb
Chinese people turn up their thumbs to express appreciation. English people do so to express not only appreciation but also approval. Chinese people never turn their thumbs down to mean anything. But English people do. They do so to show depreciation disapproval. Thus in English you can say, "We turn thumbs up (赞成) to Jack's suggestion but they turn thumbs down (不赞成) to it."
Similarly, you can warmly praise someone by saying "Thumbs up (真棒)!" and show your dissatisfaction by saying "Thumbs down (差劲)!"
16. Hair
Most people will only think of the hair on our head when the word hair is mentioned. In fact, some animals and plants also have hair.
A horrible scene may make a person's hair stand on end (毛骨悚然). But a courageous person will not turn a hair (不畏惧) even though he is in face of danger.
Sometimes, a friend of yours may be so angry that he may act foolishly. Then you had better give him this advice: "Keep your hair on (别发脾气)".