Can Friends Do It?

Can Friends do It?Sari Locker is an expert on sex--or as expert as one can be at the age of 25. Reviews of her recent book, Mindblowing Sex in the Real World, hailed her, inevitably, as the Dr. Ruth of Generation X. With a master's in human sexuality education from Penn, she also landed her own TV show (Late Date With Sari now airs nightly on Lifetime). In person, this attractive single woman is brash about her early achievements. "My youth makes me more appealing," she says. "Wha...