Pierre Lehu is a polite, low-key fellow -- not someone you’d expect to be giving advice about, say, the erotic use of onion rings. But he does. The 48-year-old Bay Ridge resident is all-around “minister of communications” for the mother of pop sexology, Dr. Ruth Westheimer – on whose latest book, Dr. Ruth Talks About Grandparents (Farrar, Straus & Giroux), Lehu is listed as co-author. “It was her idea,” he says. “I didn’t twist her arm.” Read more [...]