Idioms and how they came about
BACKSEAT DRIVER
This idiom comes from the habit many people have of giving unwanted advice from the backseat to the driver of a car. It means someone who tries to control things without having the authority to do so.
BACK TO SQUARE ONE
this idiom was first heard on early BBC radio soccer commentaries, and it means back to the beginning. THE expression was first listed in a British magazine in 1927. Since soccer wasn't easy to describe on the radio, the field was divided into eight notional squares, so that listeners could be told where the ball was. When the game restarted after the break, it "back to square one.
DEADLINE
This term originated in the American Civil War, when prisoners would be shot if they crossed a line around a prison camp. If now means the time when a project or assignment has to be completed.
KICK THE BUCKET
Kick the bucket means "to die." It possibly refers to suicide attempts in which people would attach a rope with a noose to a beam, stand on a bucket, put their head in the noose, and then kick the bucket away, so that they could hang themselves.