until the cows come home

Phrase

idiomatic

(idiomatic) For a very long period of time.

Japanese Meaning

非常に長い時間、または何年も経つほどの長い期間

You can argue about which movie is better until the cows come home, but it won't change my mind.

どちらの映画がより良いかについていつまでも議論しても、私の考えは変わりません。

Sense（1）

(idiomatic) For a very long period of time.

You can crank the engine until the cows come home, but it won’t start without fuel.