介绍:
1）Use your Loaf
-Tom stays out of trouble by using his loaf
-Jim decided to use his loaf and save up for a house.
-Jane was going to go gambling but then she decided to use her loaf and stay home.
Meaning:
Use your brain, to have common sense
Etymology:
the phrase to use your loaf is derived from the cockney rhyming slang for head which is loaf of bread.
2）Cast the first stone
-After the shop owner realized the register was short changed and he questioned his employees they all wanted to jump in and cast the first stone.
-Sarah cast the first stone after being questioned about bullying one of the students in her school.
-When a group of six friends were caught stealing, john cast the first stone and blamed his friend
Meaning:
to make the first accusation, used when the initial critic is entirely blameless.
Etymology:
stone means blame, imagine if a group of people decided to write the name of the person they blame on a stone and then the person who was blamed the most would be considered guilty. There is a popular game based on this in China called "sha ren you xi"
3）Dry Run
-NASA decided to have a dry run the day before their space launch.
-The director demanded a dry run the morning before the live show.
-Thomas decided to do a dry run at home before attempting his maths exam.
Meaning:
It is a testing process where the effects of a possible failure are intentionally mitigated.
Etymology:
In computer programming, a dry run is a mental run of a computer program, where the computer programmer examines the source code one step at a time and determines what it will do when run
