Refers to something that is simple or easy.
What is a "piece of cake"?
To get permission to do something.
What is to "get the green light"?
Someone who reads a lot
What is a "bookworm"?
It is raining very heavily
What is "it is raining cats and dogs"?
To look (and feel) fantastic!
What is to "look like a million bucks"?
A lazy person who watches a lot of television to an unhealthy level
What is a "couch potato"?
Something that happens very rarely
What is "once in a blue moon"?
What is "as quiet as a mouse"?
Something extremely fast
What is "lightning fast"?
To earn money, to achieve success
What is to "bring home the bacon"?
It's just how it is
To pass something with a high score
What is to "pass with flying colors"?
To solve two problems with one action
What is "kill two birds with one stone"?
To feel mildly ill or sick
What is "feeling under the weather"?
It is not easy to get money, implying that the person you are addressing spends money too easily.
What is "money does not grow on trees"?
We have more important things to do.
What is to "have bigger fish to fry"?
People think that they will be happier if things were different
What is "the grass is greener on the other side"?
A secret that was supposed to be kept quiet that was told
What is "let the cat out of the bag"?
Someone very happy
What is to be "on cloud nine"?
It takes a long time to do something worth doing
What is "Rome wasn't built in a day"?
Nearly identical, very similar people
What is "two peas in a pod"?
A very good chance to achieve something
What is a "golden opportunity"?
Eat a lot of food in large quantities
What is "eat like a horse"?
To have unrealistic or impractical ideas
What is to "have your head in the clouds"?
To do something rather than just to talk about it.
What is "put your money where your mouth is"?