Quote Originally Posted by cyndylu
You can also try the bowling ball grip. With your thumb in her vagina insert your well lubed middle finger into her rectum then rub your finger and thumb together. I’m not sure whether it was the thumb and finger action rubbing or squeezing the space between the two holes but the one time it happened was wonderful.

If there is a correct name for what I’ve just described, please let me know.
If it's not called the bowling ball grip, it certainly should be. That was the perfect description.