Going across a double set of off camber railroad tracks at about 30-35 MPH (actually too fast), tongue weight a little too light (should have shoved the buggy a little farther toward the front). Only takes once to make a believer out of you, an experience you´ll never forget. The trailer switched balancing itself on one tire, from side to side a few times and the XJ was doing the same, just the opposite of the trailer. Kind of reminded me of a rotund honey doing a dance, you get that thing swaying and inertia takes care of the rest.
At least I had enough sense to gas it a little, instead of using the brakes, which barley saved total catastrophe.
I was following a friend home in his lifted XJ. He was tired and almost missed the turn. Changed directions at the last second and got it sliding sideways. When the tires finally lost enough traction (and the body tilt was at just about max), the rear leafs unwound and vaulted his XJ onto the roof. Kind of a slow motion side flip, the roof was a good 6 feet or more from the street, with the XJ upside down, at the apex. I can still replay the whole thing in my mind, but kind of hard to explain. With his sway bars hooked up, he probably would have saved it.