In a sentence
He is nuts for playing volleyball in the rain!
Crazy!
On cloud 9
Very happy
two peas in a pod
very alike
Two heads are better than one
Better to have two people to help solve a problem
Sometimes I feel like when I'm talking it goes in one ear and out the other.
You are not listening
It's raining cats and dogs! Let's go back inside.
In the same boat
butterflies in my stomach
very nervous
Apple of my eye
Someone you favor
I would visit you at the drop of a hat.
Go visit you right away!
Shhhh... Let's keep Mom's party a secret. Don't let the cat out of the bag.
Don't spill the secret.
See eye to eye
Agree on something
Once in a blue moon
Something that happens rarely
Break a leg!
Good luck
Even though he was late to class, he was as cool as a cucumber.
To be calm