The story of a grape

Once upon a time there was a perfect grape. 

When the grape was in its prime, along came the rock and the cow duo, known as Mr and Mrs Boulder-Cow.

They glanced at each other, then at the grape and squashed it. (Editor's note: Images of the squashed grape are too distressing for younger readers and have been omitted).

There is no character development in this story, but there is a moral: the B-C's may inadvertently have promoted the grape to become..........wine.