Food Idioms
A task or activity that is easy to complete
A piece of cake
Very rarely
Once in a blue moon
Someone who reads a lot
Bookworm
Raining very heavily
Raining cats and dogs
Without any money
To be in the red
A lazy person who watches too much television
A couch potato
Born into a rich family
Born with a silver spoon in one's mouth
Very slow
As slow as a snail
To put some money aside for a future time when it might be needed
To save up for a rainy day
To earn money, to achieve success
Bring home the bacon
A very intelligent person
A smart cookie
To pass something with a high score
To pass with flying colours
Eat a lot, in large quantities
Eat like a horse
To feel mildly ill or sick
Feeling under the weather
It is not easy to get money, implies that the person you are addressing spends money too easily
Money does not grow on trees
Something you don't like
Is not my cup of tea
Unexpectedly
Out of the blue
To solve two problems with one action
Kill two birds with one stone
Very happy
On cloud nine
Very expensive
Cost an arm and a leg
Nearly identical, very similar
Two peas in a pod
A very good chance to achieve something
A golden opportunity
Extremely happy
Happy as a clam
Have unrealistic or impractical ideas
Head in the clouds
Very cheap
As cheap as chips