In the twinkle of an eye
Happens very quickly
Pay through the nose
Pay more than a fair price
By word of mouth
People tell it to each other rather than it being printed in written form
Laughed her head off
To laugh a lot
It tickled my ribs
Made me laugh
A laugh a minute
Very funny
Break a leg
Wish someone good luck
Put your foot down
To stop something from happening
Lend a hand
Help someone
Call it a day
Stop doing something or stop working on something
Cutting corners
Doing something poorly in order to save time or money
Pull someone's leg
Joke with someone
Speak of the devil
The person we were just talking about showed up
Under the weather
Feeling sick
A blessing in disguise
A good thing that seemed bad at first
Miss the boat
It's too late
