When you 69 eachother and the female is on her period and the male cums in her mouth while he has her period blood on his mouth and they make out mixing the 2 liquids together, thus creating the lgendary Straberry Swirl. Nothing to do with punching... people lie!
Whats that you say? It's that time of the month again! well come on down, hurry up! don't plug up that stinky, bloody, cunt with no tampon. Lets creat a Strawberry Swirl you bloody bitch!