A
When pigs fly
It'll never happen
Piece of Cake
Very easy
Cost an Arm and a leg
It is expensive
Zip your lips
Be quiet
Out of the blue
It's unexpected
By the skin on your teeth
Barely
Ants in your pants
Feeling blue
Feeling down or sad
Couch potato
Lazy
Crack me up
Make me laugh
In the dark
Unaware
The ball is in your court
It's your decision
Drive me up a wall
Making me crazy
On thin ice
In a risky spot
Wear your heart on your sleeve
Show your emotions
With flying colors
With great success
Hit the nail on the head
Got it correct
Walk a mile in my shoes
Put yourself in my place
Cold shoulder
To ignore someone
Eyes are bigger than your stomach
Took more than you can eat
Bet your bottom dollar
To be absolutely sure
Whatever floats your boat
Whatever makes you happy or feel better
Make a mountain out of a molehill
Make a problem bigger than it is
A taste of your own medicine
Experience the bad treatment given to others
On the fence
Unsure/ still deciding