Any guesses? . . .
Any guesses at all?
I'll give you a clue. It's an article of clothing . . . but it's not yours . . .
. . .
. .
.
That's right, someone else's sock*.

* I don't have a washer and dryer in the apartment I live in, so I do my laundry in the buildings laundry room. That sock could belong to anybody . . . although now it belongs to the garbage. I guess that's how socks go missing.