subway kiss Share definition Flag Where a girl is on her period and she sits on a subway seat and leaves a pussy kiss of blood. ewwwwwWWWWWWWWEWWWWWWW That slut just left a subway kiss behind. subway kiss by hideyoshi gender July 6, 2015 0 0 Get merch Get the subway kiss mug. Buy Now — $32.95 See more merch