til the cows come home
till the cows come home
For a very long, indefinite amount of time; forever. You can wait till the cows come home, but you'll never see that law passed in this country! My wife was talking on the phone with her sister till the cows came home last night!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
(un)til the cows come home
Rur. until the last; until very late. (Referring to the end of the day, when the cows come home to be fed and milked.) We were having so much fun that we decided to stay at the party until the cows camehome. Where've you been? Who said you could stay out till the cows come home?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
till/until the ˈcows come home(informal) for a long time, or for ever: You can talk till the cows come home, but you’ll never persuade me to go with you!
Farlex Partner Idioms Dictionary © Farlex 2017