Abdomen pushing Aneros in and out?

@DarkEngine, I reckon if Auto-fucking was in the dictionary, what you stated would be the description of it.

I've only gotten what I'd call a full auto-fuck once, with the maximus. Mine wasn't just in-and-out though, it was like that rolling motion described in "the quick and dirty path" thread. It was a circular motion (in/out/back/forward), it was going hard, way beyond twitches, throbs and minor involuntaries. And it was coming from a place I had no control over. I just lay there thinking "I'm not even doing this!?". Usually I'm at least a little bit in touch with the involuntaries, but these I had no part of at all. There wasn't any pleasure with it, but it was still crazy to experience.

I'd love to get the hang of these. I'd be interested to hear if you can recreate this and what circumstances favour them.

I'd love to get the hang of these. I'd be interested to hear if you can recreate this and what circumstances favour them.

It's straight-forward actually — whilst I'm standing and heavily aroused, my abdomen will start the cycle. This is likely a result of being far(?) into the journey. For a long while, getting heavily aroused only resulted in the Aneros being pushed out a little.

I'd also sometimes have what is described above. All of this is being adjusted to what the body involuntarily throws at me: doing nothing allowed p-waves. Getting use to p-waves allowed tensing. Getting use to tensing allowed Dry-O's. So on, so fourth.

@DarkEngine, I reckon if Auto-fucking was in the dictionary, what you stated would be the description of it.

You're right. Perhaps before I figured auto-fucking were the light/faint contractions that typically occur involuntarily during sessions.

Interesting that you need to be standing. Why do you think that is? I notice my anus is able to relax more fully when I'm standing or squatting, than when I'm lying down. I've always wondered if there was something to it.

Not sure myself -- it could be relaxing, as you mentioned! It might also be the weight and stance giving the device more to work with. I tend to ejaculate a lot quicker when standing, incidentally.

Standing does also keep the legs still, which is beneficial to me as they're often the first muscles to start trembling and thus short-circuit some of the growing sensations.