Introduction

I had been exploring the thrills of a male chastity cage for a short while when I discovered with dismay that, given enough lubrication, pulling out the back of the device was fairly easy. It happened to me accidentally the first time as I was performing my ablutions while locked in a CB6000. Shower-induced extra shrinkage, allied with pushing a soapy finger into the back of the tube in an attempt to clean things up in there, caused my wily organ to pop out the back! Sure, my scrotum was still stuck fast betwixt the rings, so the device was not going anywhere, but my would-be captive shaft was now flopping free above its defeated prison.
Mind you, that made cleanup a breeze. Returning the rinsed shaft to the confines of the cage was easy too, helped by the application of abundant water flow. But for me, that cast a pall on the whole head game, as if I had been enjoying some bondage and suddenly discovered that the bindings were no sturdier than paper tape.

If you read a bit about serious chastity on the web, you'll soon find out that the almost universally recommended approach to definite pullout prevention is a piercing (typically called a "PA" for "Prince Albert"). There are some other approaches that strive to achieve the same goal by squeezing/clamping the shaft one way or another within the cage but when not merely gimmicky, they typically involve lasting discomfort, sharp pain, or even potential trauma (e.g. as a consequence of urethra compression). There are also approaches that do not prevent pullout but instead provide the key holder with undeniable evidence of any such incident (e.g. the so-called "ribbon" method).

Well, piercings are not my thing, at all. Discomfort gets in the way of long term wear during normal life (driving, working, sleeping, etc), and sharp pain is not part of my kink, to say nothing of trauma. The tamper-evident approaches are also unappealing to me: I am more into the head game of "can't" than "would get caught if I did" (the bondage analogy above is fitting here too). Another issue is that most of these techniques work best on men who are circumcised and/or "showers" (as opposed to "growers" like me whose shaft varies greatly in size between flaccid and erect and can sometimes turtle-in to an amazing extent, leading to accidental escapes).

Ah, but I am an engineer by trade, so such a challenge has got to have a technological solution...

Eventually, I came across an interesting, novel concept, dubbed a "TetherSpout" by its inventor (Tether Products). It leverages the little-known fact that inside the tip of the penis, there is a ring of inelastic tissue around the urethra, roughly halfway between the meatus (a.k.a. slit) and the frenulum (bottom rear of the glans). The "TetherSpout" is composed of:

• The "spout", which is a hollow pin with a flange at one end and a slight taper at the other end (the inside bore has a constant diameter). There are also two cross holes at the taper end that come in handy later...
• The "retainer", which is a kind of washer with smoothly rounded edges that is made to very precise dimensions.

The spout and retainer are made of stainless steel. There is also a vinyl cap that can be used to close up the spout if need be:

The spout is inserted flange first, followed by the retainer, pushing the latter in sideways (as a button though a buttonhole). Finally, the spout is pulled back through the retainer. At that point, the retainer comes to rest flat against the above-mentioned inelastic part of the urethra. Provided the proper size retainer has been selected, it can no longer be pulled out (again, like a button over a buttonhole).

And here is a picture of the whole thing assembled, along with a stainless steel wire I shaped to hook through the TetherSpout and lock it onto my Male Chastity Now "Contender" cage (fleshy bits removed for... ahem... better clarity):

How secure is it? Well, barring just cutting the stainless steel lock wire (but if we are considering that, why not get a slightly bigger cutter and just slice through the padlock shackle), retracting the penis is no more possible than if I was locked in by a hook though a piercing.