In my last session I had an elevated heart rate from running around the house right before laying down to play. So I decided to take it real slow to give myself some time to relax.
After calming down and relaxing a bit I decided to continue but keep it slow. I lubed up a finger and started slowly stimulating my butthole with circular motions. Immediately I noticed p-waves spreading so I pursued it for a few minutes and was rewarded with several back to back dry orgasms.
These orgasms were triggered by the external anal stimulus, but centered in the prostate. They felt identical to the smaller (non-superO) HFDOs that I get with the aneros inserted.
Has anyone else been able to reliably orgasm from external anal stimulation alone?