I had a lot of success with this method. Just start out sitting on the toilet with your knees bent but your butt pointing out to the bathroom. Now get into a squat position, just so you are sitting on your heels. I found that my right testicle gets really sensitive when I am standing up, so I position myself on the toilet with it pointing straight at the ceiling. This position puts the testicle directly in front of my scrotum, allowing me to hit it with the full force of my body. This position also works well for when you want to cum with your balls in your hand as well. I find that the testicle is the hardest to find and hit at the same time, but once you find the right position and have the right angle, the orgasm is so intense. I also found that this position is the best position for cumming while on your back.