Mysterious aerial phenomenon

It has been an odd weekend. I had meant to go for at least one - and possibly more - long walks and fill my lungs with fresh air, but then I tripped over at least 101 things that needed doing indoors, and before much longer I'd looked up and noted with exasperation that it was starting to get dark....so I've ended up spending much of the weekend cooped up indoors like a leopard in a cage (ha ha).....but Sunday afternoon was briefly enlivened by a mysterious white substance falling from the sky....it lasted all of ten minutes or so and will doubtless be but a memory tomorrow...