My friend Karen met Terry Pratchett at the 2000 Worldcon. She is Wiccan and a big fan of his discworld books. So, she told him she wanted to be like Nanny Og. Pratchett said he could see her becoming Granny Weatherwax. Karen said she'd rather be like Nanny Og, because Nanny Og has sex. Mr. Pratchett was more than a little nonplussed by this.