Wiktionary
there's a sucker born every minute
prov. There are a great number of fools in the world, and there always be.
Wikipedia
Usage examples of "there's a sucker born every minute".
It's always a rip-off, but as old Barnum said, there's a sucker born every minute.
If I could have put an epitaph over his head, it would have been the one about how there's a sucker born every minute.