I have done this for years, however it is much more than just slamming your arm up her hole.
It takes time, sometimes long enough that your hand will fall asleep, lol, but when done correctly, slowly and with lots of lube ans stimulation it can be the most pleasure she can receive.
There actually is a book called the Art of Vaginal Fisting. I suggest that you read it not just grab a can of Crisco and run at it.
vaginal fisting
Have a good friend who enjoys it. Her vagina is not overly large but she likes rough and aggressive sex. Yes, it requires patience by the person doing it. Very hot when she is enjoying it. A bit like anal, not done all the time but just when in that mood.
Please block NCalCouple or totally ignore him. I was so happy that he never came to the BDSM board. I can't see his posts, but I see his name, that he posted. If you respond to him, mock him, blatantly insult him, he likes it. He's like a child who just wants attention. If you can't ignore him, and her bugs you, just block him, please!
It needs a pussy that has given birth to several elephants.
I've never experienced it (and never will), but have done a fair amount of fisting. It helps to have small, flexible hands and a good sense of rhythm. Also, patience.
whos explored this and how often do you do it

