Saw the worst example of "jerkism" at a local, westside lake. A couple had just returned from fishing and the husband was trying to back the trailer down the ramp, with the wife giving directions. After a couple of attempts, he got out and asked "the rocket scientist" (his wife) to go ahead and do it. She made a couple of attempts, with him moving the trailer. Yep, it was a small trailer and could be easliy repositioned. He then got in the SUV and just took off, leaving her at the ramp with the boat / gear. It got to be dark and he still had not returned, after a couple of hours. Fortunately, one of the other people there offered to take her where she needed to go.