O mangiar questa minestra o saltar questa finestra.

English translation: Either eat this soup or jump out this window.

Idiomatic meaning: Take it or leave it.

Occhio per occhio, dente per dente.

English translation: An eye for an eye, a tooth for a tooth.

Ogni bel gioco dura poco.

English translation: Every good game lasts a short while.

Idiomatic meaning: All good things come to an end.

Oggi in figura, domani in sepoltura.

English translation: Here today, gone tomorrow.

Ogni medaglia ha il suo rovescio.

English translation: There are two sides to every coin.

Ogni regola ha un’ eccezione.