TOPIC: Vagina push / press out Penis while sex (pelvic floor)

A question to All of you guys. Since I have PMMA (and I have it since 6 years) - only one time a girl pushed my penis out while sex due her vaginal muscles. If this was because of orgasm or just pressing - I do not know. But Background info:she was exercising pelvic floor muscles a lot. For her it was sport like Yoga.

Now I asked myself why there was not more girls with this nice situation. Who of you experienced girls who had such crazy vaginas (vaginas that are really „alive“)

How often you had pushing out situations? Maybe its sadly smth rare and is depending on the girl ?