While talking to my daughter on the phone and folding socks – not an easy thing to do one handed, I thought I’d come up with one sock and no mate. I said, “Now why am I missing a sock?”
My daughter answered, “Because now you have an extra plastic lid”
I said, “What???”
She said she’d seen on Facebook one day that every time you lose a sock, you get another plastic lid. Furthermore, if you KNOW you have a particular lid but can’t find it, watch out, because now you’ll find an extra sock.
That explains a lot.