When do the cows come home?
If you talk to a dairy farmer who grazes his cows they are taken home morning and evening for milking, but in a natural state they would never come home.
Cows are notoriously languid creatures and make their way home at their own unhurried pace. That's certainly the imagery behind 'until the cows come home', but the precise time and place of the coining of this colloquial phrase isn't known. It was certainly before 1829 though, and may well have been in Scotland. The phrase appeared in print in The Times in January that year, when the paper reported a suggestion of what the Duke…
Bring home the bacon. There's no place like home. eat someone out of house and home Keep the home fires burning. It's my home away from home. Make yourself at home. chickens come home to roost in the home stretch until the cows come home The lights are on but no one is home. Charity begins at home nothing to write home about the home of the free and the brave