theres a sucker born every minute

Theres a sucker born every minute is a phrase which is most often used to describe how many gullible people there are in the world. By referring to one being born every minute, this is a way to show just how many there are in the world. It is not a literal phrase but a way to exaggerate the point of there seeming to be a lot of gullible, in this case suckers in the world to where it seems like they must be born every minute.