If language was given to men to conceal their thoughts, then gesture's purpose was to disclose them. -- from John Napier

make a mountain out molehill means to make an unimportant matter seem important.

小题大做

throw a fit means to be very shocked, upset or angry.

e.g. She would throw a fit if she knew you're cheating on her.

throw a hissy fit

tantrum means a sudden short period of angry, unreasonable behavior, especially in a child.

have/throw a tantrum

cranky/grumpy means bad-tempered.

flex your muscles means to show how powerful you are, especially as a warning or threat.

e.g. One of the reasons of doing the military drill is to flex a country's muscles.

label/trademark/signature means a particular quality that makes difference from other smilier things.

e.g. Smiling is one of her trademark.

come across as means to make a particular impression.

e.g. He comes across as a generous person.

project sth/sb/yourself as sth/sb

e.g. He projects himself as a generous man.

air hostess/flight attendant means a person whose job is to serve and take care of passengers on an aircraft.

steward 空乘

stewardess 空姐

oil/grease the wheels means to help sth to happen easily and without problems.

e.g. The appropriate body language can oil the wheels of face-to-face communication.

Lubricate=oil=grease

take a hint means to understand what sb wants you to do even though they tell you in an indirect way.

e.g. I hope you take the hint and leave me along.

drop a hint means to give a hint.

get a hint means to understand a hint.

be/get carried away means to get very excited or lose control of your feelings.

e.g. She gets carried away for loosing the competition.

grope means to touch sb sexually, especially when they do not want you to.

可以用来描述“咸猪手”。