One ˌFoot in the ˈGrave
a British sitcom (=a television programme that consists of a series of humorous stories about the same group of characters) about an old man called Victor Meldrew who is always getting angry and complaining about everything, and is known especially for saying ‘I don’t believe it!’ when something goes wrong or something very surprising happens

[TahlilGaran] Dictionary of Contemporary English ▲

one foot in the grave
near death
Her grandmother has one foot in the grave and is not expected to live much longer.

[TahlilGaran] English Idioms Dictionary ▲

one foot in the grave
n. phr. Near to death.
The dog is fourteen years old, blind, and feeble. He has one foot in the grave.
Grandfather has never been sick a day in his life, but Mother cares for him as if he had one foot in the grave.

[TahlilGaran] English Idioms Dictionary ▲