I think I've solved the mystery as to where all the world's socks go when we end up with just one and never have a pair again. Thomas. My little baby Thomas. He steals socks! Even his own. Socks will not stay on his feet. And he took mine off! And then Anna's! Cheeky little guy.
Incidentally, we've also answered the question as to whether he is more like Aly or myself. And the answer is Aly. Peter doesn't like socks. They have feet in them sometimes.