stop the presses

Stop the presses is another way to tell people to stop or hold it. This dates back to when the printing presses would print newspapers and by saying stop the presses, you are saying that there is recent news which is so amazing or atrocious that it would stop the presses in order to print new papers in a new edition. Nowadays, it is another way to stop someone who has said something similar, to say it is hard to believe.