I have been experimenting with Anal stimulation while I masturbate for a while and was wondering if its actually possible to cum from only stimulating your ass and if it is if you can give me any tips on how to get it to work, I feel like I am so close to being able to cum just from anal stimulation but just cant get it right 
I use a small/medium Anal vibrator.
I use a small/medium Anal vibrator.