greatest thing since sliced bread

a little bit of bread and no cheese

Used to represent the song of the yellowhammer (Emberiza citrinella).

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.

bread and butter

That which is central or fundamental, as to one's business, survival, or income; a staple or cornerstone.

bread and circuses

Food and entertainment provided by the state, particularly if intended to placate the people.

bread of life

Anything which is regarded as a source or inspiration of spiritual nourishment.

bright young thing

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