Food Idioms
Animal Idioms
Weather Idioms
Money Idioms
What are they thinking?
100
A piece of cake
A task or activity that is easy to complete
100

Bookworm

Someone who reads a lot

100
Raining cats and dogs
Raining very heavily
100
Look like a million bucks
To look and feel fantastic
100

You are playing cards with some kids and one of them burps out loud. His face turns red and everyone looks at him

Im embarrassed. I hope they aren't judging me. 

200
A couch potato
A lazy person who watches too much television
200
As quiet as a mouse
Very quiet
200
Lightning fast
Extremely fast
200
Bring home the bacon
To earn money, to achieve success
200

You got home from school really late because you stopped by the river on the way home and threw rocks. When you walked in the door your mom had a worried look on her face.

I didn't know where you went. I'm glad you're okay but I was scared. 
300
That is the way the cookie crumbles
That is just how it is
300
Eat like a horse
Eat a lot, in large quantities
300
Feeling under the weather
To feel mildly ill or sick
300
Money does not grow on trees
It is not easy to get money, implies that the person you are addressing spends money too easily
300

After soccer practice you hand out birthday invitations to everyone except a little boy you didn’t know. What was the little boy thinking?

I'm upset that I wasn't invited. I know that I don't know him very well but I feel left out. 

400
Have bigger fish to fry
Have more important things to do
400
Kill two birds with one stone
To solve two problems with one action
400
On cloud nine
Very happy
400
Rome wasn't built in a day
It takes a long time to do something worth doing
400

After dinner on Friday night, Joe wanted to go to the movies, but his mom said no because she didn’t have enough time to wash the dishes, pick up his sister, and get him to the movie theater on time. What is Joe thinking?

I'm upset because want to go to the movies. Maybe I can help with the dishes and my mom will take me. 

500
Two peas in a pod
Nearly identical, very similar
500
Let the cat out of the bag
A secret that was supposed to be kept quiet that was told
500
Head in the clouds
Have unrealistic or impractical ideas
500
Put your money where your mouth is
To do something rather than just to talk about it
500

You were at school having quiet free time. Everyone could choose something they wanted to do, so you chose to draw. You got out your favorite clicking pen that turned different colors every time you clicked. You were playing with your pen and you looked over at the boy next to you who was reading. He looked at you with a different look on his face that wasn’t very nice. What was he thinking?

The sound of your pen is annoying and I am trying to read.