Did you know this? “In the old days, women exposed their adulterous husbands by marking their left and right socks”. I never heard this before. But this makes me a minority among Englishmen, I now realise, because they (we) have been ridiculed for decades for making love with our socks on. (Thanks to Lucas Verweij for this extraordinary information; he wrote about it in the Spanish magazine Experimenta, issue 55).