The Cincinatti bow-tie is when a woman, who is on her period, sits on the
mans face so that her
clitoris is in line with his mouth, thus placing the vagina in the neck area. During the "deed" she leaks
blood which trickles down his neck making a "cincinnati" (RED) bow tie mark. (He didn't know she was on her period until he woke up the next morning with a Cincinatti bow-tie.)