A couch potato
Butterflies in my stomach
A piece of cake
It’s raining cats and dogs
Cost an arm and a leg
Hit the sack
My blood is boiling
I am under the weather
In hot water
I am very angry!
Very easy!
To be in difficulties
Nervous and anxious
I am sick!
A person who doesn’t have an active life
Something that you say when it is raining heavily
Go to sleep!
Very expensive