You see, I think they're ... monogamous.
I was doing laundry just now, and more specifically was sorting and folding a load of socks fresh out of the dryer. I should probably note that, as a result of having bought socks over many and sundry times, I had about seven different types of socks in that load, all of which needed to be dried.
Anyhow, I pulled out about half of the socks, and started sorting. After I'd gone through that half, matching them up, I had exactly one sock left over.
And then, when I sorted out the other half, I still had one sock left over -- and it was the very same sock.
This means that, aside from the one sock that I've unfortunately separated from its mate, when I pulled half the socks out of the dryer, they came out in matched pairs. Every last one of them.
It's worse. This isn't the first time they've done that sort of thing. I'm not sure what I should be doing about them....