Speaking of DH the other day we were having a chat about DE for second bub and he mentioned biological differences not being full siblings. I went to great pains to tell him about epigenetics and how this influences Bub's looks, personality etc. Well a couple of hours later he comes back with: "About that metadata stuff..." Took me a couple of seconds to work it out. Metadata... . I have no idea where he got that from. Men.