Wiktionary
bucking off
vb. (present participle of buck off English)
Usage examples of "bucking off".
By the time they finished, the Cloudmaster was swaying and bucking off the ground.
They went bucking off the road into the sunflower field, spraying packs in all direc.
They went bucking off the road into the sunflower field, spraying packs in all directions, trying to follow the donkey.
It had him where it wanted him: right in the saddle, ripe for bucking off.
What was the use of bucking off a rider who would not stay bucked?