After 12 years of tackling head lice, I was utterly grossed out yesterday by teen DD infestation and found myself forgetting to be kind by blaming her for not combing herself more often, and made a ghastly comment about creepy-crawlies having sex on her head. Which of course they don't. I've long since harboured the idea of putting together a book on nits that is both humourous and useful, and busts those unhelpful myths, backed up with product tests and soothing anecdotes. But would anyone buy it, or are nits old hat?