Trying to get something unrealistic or impossible
chasing rainbows
Be very fast.
be lightning fast
After bad times always comes something good.
every cloud has a silver lining
Be very unfriendly.
as cold as ice
Heavy rain.
it's raining cats and dogs
Be very happy.
be on cloud nine
To tremble from fear.
shake like a leaf
Create a big problem out of a small one.
storm in a teacup
Be extremely angry.
have a face like thunder
Save money.
saving for a rainy day
to be the most wonderful and important person in the world
the sun rises and sets on you
Not paying attention.
head in the clouds