My only emotion was one of surprise, the thing was so unexpected.

I had fancied myself a fair rider, having had experience of farmers' colts of divers kinds, but this was something quite new.

The half-breed stood looking on, mildly interested; Jack was smiling, but the boy was grinning with delight.
"I'll take the little beast," said Jack.

But the grinning boy braced me up and I replied as carelessly as my shaking voice would allow: "Oh, I guess I'll manage him," and once more got into position.

But no sooner had I got into the saddle than the pony sprang straight up into the air and lit with his back curved into a bow, his four legs gathered together and so absolutely rigid that the shock made my teeth rattle.
It was my first experience of "bucking." Then the little brute went seriously to work to get rid of the rustling, flapping thing on his back.