EXAMPLES FROM THE WEB FOR LOCK HORNS
Take two young, fat steers they'll lock horns at the drop of a hat.
He and your father might lock horns first crack out of the box.
I kind of feel in my bones that him and me is going to lock horns, Curly.
Now the first and fourth and second and third lock horns and fight.
But there's another day, and the kingpin and I may yet lock horns.
He could lock horns and stay there, but it wa'nt no trouble to outflank him.
The latter stood motionless, antlers lowered as before, apparently quite willing to lock horns.
In an hour we'll lock horns with Hawk Rufe an' hell an' high water, an' the devil keeps what he gits.
Oh, considerable—they pulled and hauled about kinder like two cows when they lock horns.
It wouldn't do to lock horns with this self-satisfied despot; at any rate, not now.