When Salt-n-Pepa recorded their seminal classic “Let’s Talk About Sex” in 1990, it’s likely that they didn’t have the geriatric set in mind — but that’s not going to stop the randy senior citizens in this Fringe show. All the Sex I’ve Ever Had, a production from Toronto theater laboratory Mammalian Diving Reflex, challenges aging and sexuality taboos as a group of elderly Philadelphians field questions on their hanky-panky history. This interactive piece is the culmination of more than four years of research and dozens of interviews, a process that was often surprising for artistic director Darren O’Donnell. “The really interesting thing about the sex lives of older people is just how uninteresting they are,” he says. “It is just sex, after all.”
Through Sept. 14, 7 p.m., $20-$29, Plays and Players Theatre, 1714 Delancey Place, 215-413-1318, fringearts.com.