(I'm not sure the following stories are in theme as such - but they do display maniacal tendencies)
Story 1:
The following may be construed as being tragic, but here goes:
There was a brother (this is going back a bit) who became deluded about demon attacks and began to hallucinate; seeing small gremlin creatures manifesting around the house.
This is true by the way.
A good friend of mine who is currently disfellowshipped knew this brother extremely well and shared a house with him for a while.
The deluded brother prepared a talk and performed an audition it in front of my friend in his private bedroom. The bedroom had a window looking out over the yard and a small washing line which was attached to the upper part of the window-frame to a pole in the garden area.
Whilst presenting his discourse, the deluded one gave a small cough and asked to be excused for a moment. He went and retrieved a small pair of scissors from the main living area and returned to my friend's bedroom. He then proceeded to open the window and taking the washing line in hand; cut the line with the scissors and returned to his discourse.
Anyway.
Later that day, my good friend approached this brother and asked him why during his talk did he feel the need to snip the line. With an apparent blank expression the deluded (and quite ill) brother explained that there was a sinister looking demon sitting on the washing line staring through the window at him. He said he found this very off putting and decided to deal with the situation there and then.
I found this quite amusing at the time, but upon reflection it is very worrying that a set of beliefs can push ones mind to these extremes.
Brother-gremlin later was arrested for pounding on a local Baptist church door at 3 in the morning whilst ranting about 'Babylon The Great' in his dressing gown.
Story 2:
A sister I personally knew used to try and regularly convince me of various demon attacks that she had personally witnessed. On one occasion she told me in front of a whole book study group that her bed sheets one day were blowing in the wind whilst drying and were all as stiff as a board?!? This she assigned to Satan.
There were various other minor ramblings, but that one always sticks in my mind as being very odd.
(footnote: I do actually believe in malevolant spirit creatures and I also believe in the fragility of the human mind)