if someone is living on borrowed time, they are not expected to live much longer.

I've got cancer - I'm living on borrowed time.

• there's ... to be said for doing something
• there's ... to be said for something
• There, there.
• There wasn't a dry eye in the house.
• the road to hell is paved with good intentions.
• the roof caves in
• the roof falls in
• the rot sets in
• the rough and tumble of
• the rough and tumble of something
• the rub of the green
• the ... rung on the ladder
• the salt of the earth
• the same old same old
• the same old thing
• the same to you
• the scales fall from eyes.
• the scales fall from someone's eyes.
• the scene is set for
• the scene is set for something
• the school of hard knocks
• the scum of the earth
• the seven year itch
• the shape of things to come
• the sharp end