Um... I've no idea what happened there, but if I recall correctly I was trying to post about an odd sound/sensation which occurred. So let's try again...
That afternoon (the day before my aborted post) I was sitting at home, Mr Zebra had taken the dogs for a walk. There was a loud thud/boom sort of sound, but most importantly though it was
accompanied by a distinct, but very brief, feeling underfoot. If you've ever lived in a semi-detached house of dubious construction (think 60s/70s council houses here in the UK or - very probably - modern housing) then you'll know of the effect of a door being slammed and the slight feeling of shaking of floorboards which accompanies it.
It felt exactly like that. Except; we live in a detached house, and its construction most certainly does not lend itself to shaking.
But that's what I felt. In fact, that's what immediately came to mind (in that very quick way that one's brain provides a solution) before I realised that logically it could not have been that.
When Mr Zebra returned from his walk I told him about it; curiously
he had also heard the sound but had not felt any shaking underfoot. He could not (and still can't; I've just asked him) define either what sort of sound it was, or what direction it had come from. But heard it he had; while in the park not too far away from our house (and therefore standing on grass - in case that makes any difference to the lack of shaking on his part).
So; that's it - not particularly exciting I know, but it remains an odd mystery. Not the sound itself per se; as there can be many explanations for odd sounds (although neither of us know what it was to this day, and have not heard it since) - but mainly why on earth I felt it underfoot as I sat at home remains quite bizarre.
I shall note that nothing shook or otherwise moved during the brief moment that I felt and heard the sound, and we do not live in an earthquake zone as far as I know
Thoughts and/or similar experiences greatly received...