(as) dead as mutton British old-fashioned simile
No longer existing, living, or operating properly.
The cat was bitten by a big dog and as dead as mutton by the time I got to it.
My phone is as dead as mutton. I'm thinking of throwing it away.
It is no use turning it on. It is as dead as mutton.
To act recklessly; to have a desire for death
Secrets cannot be revealed by the dead.
This simile dates from the late 18th century.
Being on the brink of death with the mouth showing the Q-sign
She is in the Q-zone due to massive blood loss.