Somebody's/something's days are numbered sentence
Meaning somebody or something will not survive, work or succeed for much longer.
Peter knew his days were numbered. That's why he spent all his time with his family.
My laptop's days are numbered. It keeps turning off by itself while I am working.
The doctors have told my family to be prepared because my grandma's days are numbered.
To quit; to give up, stop doing something because you know that you cannot succeed; admit defeat
The inexplicable or concealed place or state indicates the afterlife.
a joke, idea, or suggestion falls flat, meaning that it does not achieve the intended effect.
To begin to decline or deteriorate decline; to get worse very quickly
The first record of this phrase is believed to be written by Reginald Scot, in his The Discoverie of Witchcraft, 1584. Moreover, the expression is supposed to be related to the Bible or Shakespeare.
This phrase is used to describe something very modern or updated or something that no longer looks like what it's used to.
It has been a long time since I left my high school, and now I have to admit that it's certainly not your father's high school anymore.