eat like a horse
Definition: usually eat a lot of food
Tom eats like a horse! Make sure to grill three hamburgers for him.
He doesn't usually eat like a horse.
eat like a bird
Definition: usually eat very little food
She eats like a bird, so don't make too much for dinner.
He weighs 250 pounds even though he eats like a bird.
feel like a million
Definition: feel very good and happy
I'm feeling like a million today.
fit like a glove
Definition: clothes or apparel that fit perfectly
My new shoes fit like a glove.
Her jeans fit like a glove after she went on a diet.
go like clockwork
Definition: to happen very smoothly, without problems
The presentation went like clockwork.
Her plans went like clockwork and she was able to join the company.
know someone or something like the back of one's hand
Definition: know in every detail, understand completely
She knows me like the back of her hand.
I know this project like the back of my hand.
like a bat out of hell
Definition: very fast, quickly
He left the room like a bat out of hell.
They drove off like a bat out of hell.
like a bump on a log
Definition: not moving
Don't sit there like a bump on a log!
She sits around all day like a bump on a log.
like a fish out of water
Definition: completely out of place, not belonging at all
He looks like a fish out of water on the football field.
The boss felt like a fish out of water in San Francisco.
like a sitting duck
Definition: be very exposed to something
He felt like a sitting duck and moved to cover his position.
Your investments have left you like a sitting duck in this market.
out like a light
Definition: fall asleep quickly
He went out like a light.
I hit the pillow and was out like a light.
read someone like a book
Definition: understand the other person's motivation for doing something
She can read me like a book.
I know you don't mean that. I can read you like a book.
sell like hotcakes
Definition: sell very well, very quickly
The book sold like hotcakes.
The iPhone initially sold like hotcakes.
sleep like a log
Definition: sleep very deeply
I was tired and slept like a log.
She went home and slept like a log.
spread like wildfire
Definition: an idea that gets known very quickly
His solution to the problem spread like wildfire.
Her opinions spread like wildfire.
watch someone like a hawk
Definition: keep a very close eye on someone, watch very carefully
Don't make any mistakes because I'm watching you like a hawk.
She watches her son like a hawk whenever he goes outside to play.