For example, the police might look for someone they call a cold-blooded killer. The person killed someone without any understandable cause - not in self-defense, fear or even anger. Killing for no reason is often called cold-blooded.

Okay, enough of cold-blooded people. Let’s go back to fish!

As we said earlier, most are cold-blooded. So, calling a striped bass or rainbow trout a “cold fish” is fine. They would not be insulted…if they could be insulted.

But calling a person a “cold fish” is an insult.

A cold fish is a person who is unfriendly, unemotional and shows no love or warmth. Cold fish do not offer much of themselves to anyone.

However, not everyone who doesn’t show their feelings is a cold fish. Some people keep their feelings to themselves until they know you better. We could describe these people with the expression cold hands, warm heart.

This means that a person may be very kind and warm. But they just don’t show their feelings very easily. Take my friend Celeste as an example. She doesn’t normally show her feelings. But she is always ready to help and is very kind. She is a classic case of cold hands, warm heart.

Speaking of hands, the hands and feet are some of the first body parts to feel the cold. Getting cold feet is no fun – outdoors or in conversation.

To get cold feet means to become afraid to do something you had already decided to do. We use this expression in situations that make us nervous or afraid -- from leading a big meeting at work to singing on stage in front of strangers.

But we commonly use it in connection with weddings. People who are about to get married may begin to feel nervous as the day nears. They begin to question if they should take such a big step. If a bride shares these feelings of nervousness and uncertainty, a relative or friend might answer with “Don’t worry! This is a classic case of cold feet!”

Another body part involved in our cold expressions today is the shoulder.

You give someone the cold shoulder when you refuse to speak to them. You ignore them. The expression probably comes from the physical act of turning your back toward someone. You may give a cold shoulder to a friend who has broken a promise, or to someone who has said mean things about others.

straightforward – adj. easy to do or understand : not complicated
sympathy – n. the feeling that you care about and are sorry about someone else's trouble, grief, misfortune, etc. : a sympathetic feeling
trend – n. a general direction of change : a way of behaving, proceeding, etc., that is developing and becoming more common
forked tongue – n. the intent to mislead or deceive —usually used in the phrase to speak with forked tongue
striped bass – n. a large silvery marine food and sport fish that has black horizontal stripes on the sides,
rainbow trout – n. a large trout native to western North America that usually has red or pink stripes with black dots on its side
classic case – n. a typical example
specific – adj. relating to a particular person, situation, etc.