Idiom: “Spill the beans”

Derramar las judías! Claro que sí, se entiende y se deduce super bien! (irony mode on).

Os REVELO el significado? : contar información secreta

A: So Bryan is quitting? I didn’t know that?

B: oops, I think I just spilled the beans.

The surprise party is tomorrow, don’t spill the beans!