until the cows come home 

A long time, usually defining how late
someone might stay up at night or out at bars, nightclubs, discos etc.

The origin of the phrase goes back to
a time when people were familiar with the time cows came home
(in the very early morning... 4 - 5 a.m.) because they wanted to be milked.

Person 1: We are going to go out to night!

Person 2: Really? how long?

Person 1: We are staying out until the cows come home!

until the cows come home by G. Canis March 23, 2004

until tomorrow 

you might have seen everybody posting on their instas funny pictures with the caption “until tomorrow” this means that that they are keeping the picture on their feed until the next day in which the next day they delete the picture

“what does until tomorrow mean?”

until tomorrow by Watemamdjck March 24, 2020

Until the trust fund runs out 

As long as I am able

I don't have Internet access of my own, but I'm gonna keep stealing wi-fi from my neighbor until the trust fund runs out.

Until the trust fund runs out by Rico Detroit June 14, 2008

until next communion 

This is how people say “Until next time” on Earth-19 (The Flash) according to H.R Wells, the doppelgänger of Harrison Wells. (The gif is a picture of Harrison Wells/H.R Wells)

“Until next communion” - H.R Wells

until next communion by H.R Wells Twin December 5, 2019

until the end of time 

It means forever,always.

We will be friends until the end of time.

until the end of time by BlackPohatu September 4, 2016

until when when 

Used to describe an ever-lasting love.

Isyraf told Amirah, "I'll love you until when when".

until when when by karipap March 11, 2023

until the cows come home 

1) For a very long time.
2) From now until whatever time the fat broads you live with return to the house.

1)
When the cops started knocking on the door of the cocaine storehouse, Pete and Tony jumped out the window and ran until the cows came home.

2)
"Hey dad, when are we gonna be eating dinner?"
"Not until the cows come home, son. Where the hell are your mother and sister? I'm hungry too."

until the cows come home by Nick D February 25, 2004