time flies
time goes by quickly
My car is a lemon.
The car is no good.
When pigs fly
not likely to happen
It's raining cats and dogs.
It is raining a great deal.
My lips are sealed.
I won't tell.
spill the beans
tell the secret
I lost my head.
I got angry or upset.
Blind as a bat
can't see very well
has a heart of gold
is very kind
I'm on cloud 9.
I am very happy.
a coach potato
a lazy person
under the weather
not feeling well
Break a leg
good luck, hope they perform well
killing two birds with one stone
getting two things done with one action
Beating about the bush
not getting to the point
in the dumps
depressed or sad
let the cat out of the bag
told the secret
like a fish out of water
very uncomfortable
It's a piece of cake.
It's very easy.
walking on eggshells
trying really hard not to upset someone