An Idiom is a phrase that does not mean what it literally implies. Idioms are used in spoken NOT written language.
1. A penny for your thoughts - This phrase is just a way of someone asking you what you are thinking about.
2. Break A Leg - If someone tells you to break a leg, they aren't wishing injury on you. They are simply wishing you good luck. "Break a leg at your job interview today."
3. Bite your tongue - This phrase can be used in two different ways. It can mean to stop yourself before you say something you regret.
4. Don't count your chickens before they are hatched - This phrase has nothing to do with chickens. It simply means, don't be confident in anything until it happens. "You may think you have that job, but don't count your chickens before their hatched."
5. The early bird gets the worm - The person that acts first usually has the best chance for success, thus, "the early bird gets the worm." As in, "Roger always gets the best deals at yard sales. The early bird gets the worm!"
6. Fish out of water - When someone says that they feel like a "fish out of water", it means that they feel uncomfortable. It probably means that they are in a situation that they are very unfamiliar with, or one that is very new.
7. Got off on the wrong foot - If you've have just begun something, and it went badly, you have "got off on the wrong foot." This can apply to a project, meeting someone new, or anything that you have just started.
8. Hit the nail on the head - When someone says you've "hit the nail on the head", it means that you are exactly right.
9. Hop, skip, and a jump - If something is only a "hop, skip, and a jump" away, it means that it is very close by.
10. Rings a bell - This phrase means that something sounds familiar. If someone asks you if you heard the latest news, and it sounds familiar, you may say that it "rings a bell."