last thing

be a thing

To exist, or to be available, widespread, possible, or a common practice.

best thing since sliced bread

Alternative form of greatest thing since sliced bread.

best thing since sliced pan

Alternative form of greatest thing since sliced bread.

breathe one's last

To die.

bright young thing

One who is youthful, clever, eager, and high-spirited in manner and attractive in appearance.

chance'd be a fine thing

Synonym of no chance or fat chance, with a somewhat more cheerful attitude.

cobbler, keep to your last

One should not criticise matters outside one's field of expertise; one should mind one's business.

dead last

Finishing in last place in a competition or ranking, often by a considerable margin to the next to last place finisher or after an exceptionally poor showing or season.