It's raining cats and dogs.
Idiom
You're as sweet as pie!
Simile
The wind is as cold as ice!
Simile
The teacher has eyes in the back of her head!
When pigs fly...
Idiom
My hair is spaghetti.
Metaphor
You are my sunshine.
Metaphor
That test was a piece of cake!
Idiom
Cat's got your tongue!
Idiom
He went bananas!
Idiom
It feels like a hot oven outside!
Simile
My alarm clock yells at me to get out of bed every morning.
Personification
He eats like a pig!
Simile
Those cookies are calling my name!
Personification
The flowers danced in the gentle breeze.
Personification
My backpack is as heavy as a box of bricks.
Simile
The snow screamed under the polar bear's large paws.
Personification
I feel like a kid in a candy store!
Simile
The wind screamed as the tornado raced through the town.
Personification
My computer hates me!
Personification