Lighten up
To relax
What is "to be all smiles"?
Look very cheerful and pleased, especially in contrast to a previous mood.
Under the weather
To feel sick
Piece of cake
Really easy
Blow off steam or let off steam
To do or say something to get rid of strong emotions
Speak of the devil
The person we were just talking about just showed up
Pulling someone's leg
Trying to trick someone
Cutting corners
This idioms means to do something poorly in order to save time and/or money
To lower your guard or drop your guard
To stop being careful about showing your emotions
Cost an arm and a leg
Being extremely expensive
Raining cats and dogs
Raining really hard
Rule of thumb
A basic rule you have to follow
To see red
This idioms means to get really angry.
Call it a day
To decide to stop doing something
To burst into tears
This idioms means to suddenly start to cry.
Wrap your head around something
To fully understand something
What is "get a grip"?
This idioms means to get control over your emotions.
Keep a Straight Face
To try not to smile or laugh.
Lose your head
To lose control of your emotions.
Hit the hay
Go to sleep
Break a leg
Good luck in theater
A dime a dozen
Something very common
A picture is worth a thousand words
Better to show than tell
Go back to the drawing board
To start over
Wear your heart on your sleeve
To show your feelings, especially your love for someone.