Pain
Break a leg
What is: good luck
It cost an arm and a leg.
What is: It was very expensive.
They led me on a wild goose chase.
What is: what they had me do was pointless
There are other fish in the sea.
What is: other opportunities will arise, even though you can't have this one
He has the lion's share.
What is: he has the biggest portion or the majority or something
No pain, no gain.
What is: you must work hard to succeed
To pull someone's leg
What is: to joke with them
The early bird gets the worm.
What is: the first to arrive gets first choice or best pickings
Don't count your chickens before they hatch.
What is: don't count on something for sure until it happens
She is so pig-headed.
What is: she is stubborn
What is: to make a bad situation worse
We see eye to eye.
What is: we agree
We need to talk about the elephant in the room.
What is: let's discuss the big issue that everyone is avoiding or ignoring
Birds of a feather flock together.
What is: people who are alike are often friends
She's a one-trick pony.
What is: she only does one thing well
To get bent out of shape.
What is: to take offense or become very angry
This is getting out of hand.
What is: the situation is getting out of control
Curiosity killed the cat.
What is: stop asking questions
You can lead a horse to water, but you can't make him drink.
What is: you can give someone an opportunity, but you can't force them to take it
They have bigger fish to fry.
What is: they have more important things to do
Once bitten, twice shy
What is: one is extra cautious after being hurt in the past
You made it by the skin of your teeth.
What is: you just barely made it
I will kill two birds with one stone.
What is: accomplish multiple things with one action
I heard it straight from the horse's mouth.
What is: I heard it directly from the person involved.
Let sleeping dogs lie.
What is: leave it alone; don't bring up that subject