Meet the Fokkens The twins 69 are retiring and writing a tell all book about their experiences working in Amersterdam. Here is what they had to say about it. Practically speaking, the two have been retired for some years now, a factor of both advancing arthritis and an admitted difficulty in attracting new clients. But Martine still has a regular, and “I couldn’t give him up,” she told The Inquisitr. “He’s been coming to me for so long like it’s like going to church on a Sunday.” After a couple years on the fence, though, the Fokkens recently finished a new book on their sexual endeavors, “The Ladies of Amsterdam,”…