The story
Mixed metaphor combining until the cows come home + when Hell freezes over.
Etymology from Wiktionary, CC BY-SA 4.0.
until the cows freeze over
Today it means: For a very long period of time. Full definition →
Today it means: For a very long period of time. Full definition →
Mixed metaphor combining until the cows come home + when Hell freezes over.
Etymology from Wiktionary, CC BY-SA 4.0.