We used to have a paint horse (can't remember his name) that just couldn't be broken. My uncle, who is a seasoned horse breaker, couldn't break him, and neither could several other people who tried. He was ridable, but not (shall I say) steerable. He'd take off running and you never knew where he was going to go.
He wound up getting killed after getting out of the barn and wandering across the highway.
He wound up getting killed after getting out of the barn and wandering across the highway.