I think, from memory, I had a butt plug inside. I do have an e-stim connectable plug but I was using both channels of the unit to power the pads. The e-stim butt plug is great because with the right pulse setting, it feels like I'm being fucked
You're probably right, though i was trying to show here that the body can orgasm without directly stimulating the cock. The e-stim is simulating the effect of a gut punch. Hands free orgasms have always intrigued me especially when attained by centering the stimulation to the abs and prostate, as some of my other vids show.