I'm going to stay home from school. I'm feeling under the weather
Not feeling well; sick
You seem upset, do you need a break to cool off?
calm down
She let the cat out of the bag when she told her friend about the surprise party.
She told a secret when she told her friend about the surprise party.
He always bends over backwards to get his work done.
He always tries very hard to get his work done.
I'm so in love. I'm on cloud nine.
extremely happy
You're so funny. You crack me up!
You make me laugh!
I'll buy you lunch. It's on the house
It's free/paid for by someone else
Her garden looks amazing, she has a green thumb.
She is able to grow plants well.
Don't spill the beans about the surprise party.
tell a secret
I'm so tired, it's is time to hit the hay.
It is time to go to sleep.
Stop lying and come clean.
tell the truth
He got cold feet before getting on the airplane.
He got nervous before getting on the airplane.
Whenever I go on rollercoasters I get butterflies in my stomach.
Whenever I go on roller coasters I get nervous.
My best friend came over to play a game and chill out.
My best friend came over to play a game and relax.
Your behavior is getting out of hand
Getting out of control
I always get tongue-tied when I talk in front of people.
I always get speechless when I talk in front of people.
Hold your horses, we can leave yet!
Wait!
I'll stop talking, I'm all ears.
I'm listening.
Break a leg in your school performance!
Good luck!
We only see our grandma once in a blue moon.
We only see our grandma once in a while. (rarely)
The new iphone costs an arm and a leg.
The new iphone is expensive.
It is raining cats and dogs!
It is raining really hard.
This homework is going to be a piece of cake.
This homework is going to be easy.