Originally Posted by
Balloney
There is a position my wife and I have rarely done because it is a kind of weird position, but it's pretty good for access to the balls. My wife's arms aren't super long or anything, and she's smaller than I am, so reaching around and playing with testicles during sex is a little difficult.
A position that is good for it is a kind of reverse missionary with the male on top. He faces toward her feet. The penis enters in at a weird angle which could be less than optimal for either him or her. But she can see his balls right there about as close as her clitoris at the bottom of the down stroke (if he enters all the way.) So she can smack or squeeze the testicles in that position. It may make it easier and more comfortable for her to play with them if she is propped up on a pillow. If she aims well, she can give him a ball spanking while he thrusts. She may be able to squeeze him as well.