Thank you so much for the information on Dodson and Ross. I will have a look! All the best.
Hi Healthy, Could be her orgasms are tightening a ring in her vagina, a spasm, if not that it could be just her muscles doinf the same going into a spasm, If you google dodson and ross, Dr Betty Dodson, she is the queen of orgasms, she may have an answer if you post her, but also have a look through her orgasm pages, you may find an answer there.
Good Luck