Aunt Flo's Coney Dog Share definition Flag having sex while the female is on her menstrual cycle and then sticking your penis between her breasts. Jim gave Sally an aunt flo's coney dog last night. Aunt Flo's Coney Dog by Al Bogus May 28, 2009 0 0 Get merch Get the Aunt Flo's Coney Dog mug. Buy Now — $32.95 See more merch