Positive
A piece of cake
That something is easy
Blue in the face
Be tired because of too much effort
Over the moon
Be happy
Kick the bucket
When someone dies
Cool as a cucumber
Relaxed and fresh
Under the weather
Feeling down
Pig out
Hold your horses
Wait a minute
Walk on air
Pretty happy
It's all greek to me
Not understanding
Head in the clouds
Distracted
Have your ducks in a row
Be organised and have everything planned
Thick as thieves
Very close people
The lights are on but nobody is home
Describe an idiot person.
A storm in a teacup
Making a big fuss about something small
Keep your shirt on
Calm down
On cloud Nine
Very happy/relaxed
Sat on the fence
Be undecided
Raining cats and dogs
Is raining heavily
Put a sock in it
Shut up