Antsy disestablishmentarians

If you get a whole bunch of contrarians in a room together, what happens? Do they all argue it out to see who is the top contrarian, or do they all slyly agree with one another in a passive aggressive attempt to piss one another off? Or does something more shocking happen, and they find that, having opposed orthodox opinion for so long, they are all genuinely in agreement with one another and they never need to start arguing at all? Or - in the somewhat more likely event of them actually not finding any point of agreement at all - what happens if someone actually says "we can't agree on anything at all, can we?" Would it, like, cause the universe to explode or something, or would they all avoid catching one another's gaze and instead look down to their feet as they shuffle awkwardly about the room?

And, while you're all thinking about that, what's the collective noun for a group of contrarians anyway? A disagreement? A beg-to-differ-ance? A Wellactually?