Stagecoach driver's "Stop!"

Usage examples of whoa.

Then, this afternoon, he had blown a hose or something, he had taken the Wentworth exit in search of the Great American Service Station, and then whoa, dude there had come a big bang from under the hood and all the dials on the dashboard started showing bad news.

He had treated angelic-looking boys whoas their advanced state of social disease clearly provedhad been sowing their seed in any cavity that could be induced to hold still for twenty seconds.

Still, she's urrish, and there's a limit to how much of a humicker any urs can be, before planting four feet and saying whoa.