I've told this story before . . . but it is the true answer to the above question . . . so i'll tell it again.
After over 20 years a JW, I visited a small town KH for the first time. I got there about 20 mins early and was immediately accosted by a middle aged 'brother' a few years older than myself . . . It was like someone had accidently overwound this guy's spring.
He greeted me with some inane question like . . . "Have you ever wondered what it would be like to live forever in paradise conditions . . . ? . . . I mean really wondered . . .have ya . . . eh . . . eh?
The introduction was quickly followed up by the entire WT interpretation from Adam to freakin Armageddon! . . . this guy had no pause button AT ALL
As folks wandered in they seemed to give us a wide berth and I was left inside a 3 meter circle with this guy for the full 20 mins . . . never spoke to anyone else (or him for that matter) . . . he lifted his volume and pace every time my lips even dared to part . . .if I tried to move away he simply followed me . . . it was a total embarassment . . .
I got some satisfaction from how he might have felt when I got up to deliver the talk . . . but the residual embarassment meant I gave the talk almost entirely to one side of the hall.
I even left before the WT study mumbling some weak excuse to a local elder . . . I couldn't wait to get outta there!