“Fall flat”

“Fat chance”

Very little or no chance.

“Eat humble pie”

To admit that you were wrong.

“Fight fire with fire”

To use the same methods as your opponent.

“Food for thought”

Something worth thinking about.

“Don’t hold your breath”

Do not expect something to happen soon.

“Fall into place”

To become clear or organized.

“Fill someone’s shoes”

To take over someone’s role or responsibilities.

“For a song”

For a very low price.