It's raining cats and dogs.
Heavy rain.
Light rain.
A piece of cake.
Very difficult.
Very easy.
Ants in your pants!
Uncomfortable
Comfortable
Shake a leg!
Slow down!
Hurry up!
Let the cat out of the bag!
Reveal a secret.
Keep a secret.
Break The Ice.
Start a conversation.
End a conversation.
Bite the bullet.
To run away.
To be brave.
Hit the nail on the head.
To solve a problem.
To make a problem.
Under the weather.
Feeling good.
Feeling sick.
Cost an arm and a leg.
To be very expensive.
To be expensive.
Spill the beans.
To tell a secret.
To keep a secret.
In hot water.
To be fine.
To be in trouble.
Bite off more than you can chew.
To do very little work.
To do too much work.
Penny for your thoughts.
Ask what someone is saying.
Ask what someone is thinking.
On Cloud 9
To be very sad/angry.
To be very happy/excited.
A fish out of water.
To feel very good.
To feel uncomfortable.
