WordNet
Usage examples of "smart as a whip".
Arsen had often reflected that his own father's father, Grandpapa Vasil Ademian, would probably have gotten on fabulously with the old Micco, for like the aged Indian, the old man had been both smart as a whip and tough as rusty nails until the very day he had died after helping to reshoe a fractious horse.
Yes, they live in a real stone-age technology, but they all are still smart as a whip.
Paul was one of the most thoroughly good guys I have ever met and smart as a whip as well.
You're American, you've only got one and a half ears, and you're as smart as a whip.