won't hold water

With Trump’s endorsement in hand, any notion that she is not conservative enough just won’t hold water with voters.

He also says that shredded grass won't hold water as well.

That argument just won’t hold water.”

The argument that it should only be done by those who can afford it won’t hold water, because our health care system is almost completely incapable of taking cost into account once benefits have been widely promoted.

Wild pigs are virtual Houdinis, able to dig or climb over almost any barrier; pig experts are fond of saying that “if a fence won’t hold water, it won’t hold a wild pig.”