can someone explain why when the seme goes in very deep, there's this random band/ring of tissue in the uke's ass?? like i know some anatomy but what is it meant to be
i stole this from britannica but this is it: "a circular muscle structure (sphincter) at the junction between the sigmoid colon and the rectum keeps material within the colon until it is ready to be passed." it also apparently feels good when ya hit it during sex :3c
can someone explain why when the seme goes in very deep, there's this random band/ring of tissue in the uke's ass?? like i know some anatomy but what is it meant to be