I was sounded at my very second session... didn't think of this during the pre session talk. i only gave her admission for trying some electric. And laying spread eagled and cuffed on the bondage table, i was in no position to negotiate... and it was just ok. No big thing, just some curious feelings and a strange vision seeing her penetrate my 'hole'. So, it's not a limit, but not an preferred action in sessions. Later, i experienced this in combination with current - that's a totally different story...

My Mistress and I have a metal sounding set but we’ve never used it. I think there is a fear of injury on her part. Me being the dumb male, I’m less concerned and would be willing to try it. I do think it is quite the mindfuck to see metal going in and out of the penis. Cumming from that would be humiliating to me. But I do like the CBT and torture aspects of the activity. Of course I’ve fantasized about having cock and scrotum nailed to boards before - so sounding is a step down from that.

Sounding is probably one of my favorite activities besides anal play and medical. I enjoy feeling the sensation of the sound sliding down. The only aspect of sounding that I don't really enjoy is e-stimulation. It is probably due to the fact the first time the e-stim seemed to be bouncing the shock and not being consistent. I recall that one minute I would feel it mildly then the next time it would hit me hard enough to the point I would have to grimace in pain. It remained so inconsistent even though the wave that was selected was more of a constant repetitive type. One pro-domme I am currently seeing has used various things including a tuning fork while doing sounding. I honestly enjoy watching bigger sounds being inserted gradually. When I think I couldn't take a larger one, I soon discover that "yup that one fits too". I've often had some residual discomfort but thats usually caused by the depth of the insertion.

I played with a German sub last year who enjoyed giant sounds. I was amazed at the cigar sized sounds he easily swallowed up. He also relished exotic lubricants. His favorites were Vicks vapor rub, and El Yucateco Habanero Xxxtra Hot Sauce.

Any experiences with giant sounds, or exotic lubricants?

Feels great and I have actually graduated to taking a pinky.