You need to hold your horses.
You need to wait.
I'm just pulling your leg.
I'm just joking.
That's a wrap!
It's all done
I have butterflies in my stomach.
I'm really nervous.
It's raining cats and dogs.
It's raining really hard.
This is a blast!
This is so much fun!
That was a piece of cake!
That was very easy!
I'm feeling under the weather.
I'm feeling sick.
Zip your lips.
Be quiet.
Let's go hit the books.
Let's go study.
I'm on cloud 9.
I'm very happy.