I actually did some crabbing in my old CJ once.
No way to prove it now, of course, although the guy who was with me is still around and might remember.
I was way back in the swamp and they were logging in the area.
The log trucks had worn the ruts out so deep in this old swamp road, that I would have gotten high centered if I tried to stay in the ruts.
So, I was easing along in 4Low splitting the ruts until I came to a tree right alongside the road.
Nothing to do but try to carefully cross over.
Somehow managed to get my Jeep perfectly straight across the road with the rear wheels in one rut, and the front wheels turned the way I wanted to go in the other rut.
Let off on the clutch, and the rear wheels just turned slowly wearing off the edge of the center, and the front wheels pulled us along.
Dead sideways.
We looked at each other and started laughing. I just sat back, let go of the wheel and gave it a little more gas.
We drove along that way about a mile or so, past some astonished loggers, doing about fast walking speed, until we hit a hard spot where the ruts were not so deep and it climbed out.
My first and last time "crabbing".