One hot summer's day, a fox was strolling through an orchard. He came to a bunch of grapes just ripening on a vine. "Just the thing to quench my thirst," he said.
Drawing back a few paces, he ran and jumped, but just missed the bunch. Turning round again with a one, two, three, he jumped up, but with no greater success.
The fox tried again and again but wearied himself in vain, for he could not reach them. He walked away with his nose in the air, saying: "I'm sure the grapes are sour."