Brady Bunch Mom Spills About Old Fling With Mayor Florence Henderson says one-night stand with John Lindsay gave her crabs By Evann Gastaldo, Newser Staff Posted Jun 27, 2011 9:18 AM CDT 13 comments Comments Florence Henderson arrives at the Academy of Television Arts and Sciences 20th Annual Hall of Fame Induction Gala in Beverly Hills, Calif. on Thursday, Jan. 20, 2011. (AP Photo/Matt Sayles) (Newser) – The big revelation from Florence Henderson's upcoming memoir: After a one-night stand with then-mayor of New York City John Lindsay, the Brady Bunch star got crabs. "Guess I learned the hard way that crabs do not discriminate but cross over all socioeconomic strata," Henderson writes, adding that Lindsay sent her flowers and an apologetic note. "He must have had quite the active life. What a way to put the kibosh on a relationship." Lindsay died in 2000 and his wife of 51 years died in 2004, Reuters reports. Henderson, now 77, was also cheating on her husband at the time. But—contrary to popular rumors—she never had an affair with 20-years-younger Barry Williams, who played her eldest stepson on the show, though he "did have a serious crush on me," she writes. The book is out Sept. 20.