Until the cows come home.
Until the cows come home.
'Until the cows come home' is a humorous way of saying something will take a very long time, perhaps indefinitely. Originating from rural times when cows would take their time returning home at dusk from the fields, this idiom is used in modern language to describe waiting for something that seems like it will never happen, highlighting a sense of prolonged or exaggerated duration.
They could argue about politics until the cows come home.
They could argue about politics for an endless amount of time.
You can try, but he won't change his mind until the cows come home.
No matter how much you try, he won't change his mind for a very, very long time.
We can debate this issue until the cows come home and still not find a solution.
They could debate this issue indefinitely without finding a solution.