When pigs fly, is an English idiom used to express that something is highly unlikely or will never happen. The origin of this phrase is a bit uncertain, but it's believed to have roots in Scottish folklore. The phrase likely evolved from the idea that pigs, being heavy animals, couldn't physically fly. So, saying "when pigs fly" was a way of saying something was impossible. Over time, it became a humorous and widely recognized expression for something that is very unlikely to occur. So, if someone says, "I'll believe it when pigs fly," they mean they find the idea extremely improbable or even impossible. Ejemplo: Sure, I'll start eating vegetables regularly when pigs fly! El modismo " cuando las ranas crien pelo " es una expresión popular en español que se utiliza para indicar algo que es extremadamente improbable o que nunca sucederá. La idea de las ranas criando pelo es algo que va en contra de la naturaleza y es considerado ...
English student level B2, practising and writing short stories.