The Island of Mismatched Footwear
they get turned into willy warmers
what size feet do you have
thats my boy
Find the answer to that question and you will have the meaning of life.!
Can't go nowhere with no feet.
In between the washer unit interior and the drum.
To look for a better pair
The gremlins and trolls, they were banished from their bridges and so they resorted to our washing machine and feed of our socks
Under the bed maybe
They are in the dryer or clung (static) to some other item you no longer use or don't realize you needed until you find it years later.
Aliens wear them as hats. Thats why one goes missing at a time.