You washed two, now there's only one sock. Black Hole? Alternate dimension? Sir P'Terry's sock Eater? -- Anon Guest.
Even in the modern day, there are things unknown to magic or science. The hidden creatures that have so far evaded notice by the common and uncommon worlds. They eke out an existence in the forgotten corners. And live where you'd never notice them. One such creature is the line-dangling shoe lark, which exclusively nests in the shoes random people throw over the power lines. But today's creature of interest is the Sock Whiffler.
Another urban shadow-beast, the Sock Whiffler makes its nests in the overgrown corners of absent-minded gardeners and the "nature strips" of worthless land that the council can never be bothered to mow. In England, especially, the Sock Whiffler might be found in hedgerows. If one even knew how to look.
The male of the species is constantly on the look-out for the perfect sock. In which, his intended mate will bear and feed her young in perfect safety. He goes from house to house, from laundry to laundry, searching each and every machine he can break into for the perfect sock. Only one of each kind will do him, and he carries them about on his back spines. Were you actually able to observe one in action, you might be amazed at how his paws are adapted to opening laundering machines with little difficulty. But... even with a collection of interesting socks on his back, the Sock Whiffler is perfectly camouflaged and easily overlooked.