Could somebody explain how these play out in practice? You see them in drawn porn all the time, large triangular boxes at a steep angle, but when it comes to rl stuff its rather hard to come across such design, usually its more like a horizontal bar rather than a pointy box.
>>1179421
The point is that you put somebody in a predicament bondage situation, where they have to struggle to reduce the painful pressure on the ol' groinal area.
Triangular ones like in your picture allow the victim to try and squeeze with their legs to support some of their weight.
The plank or bar versions don't, but instead allow the possibility of standing on tiptoes.
In either case, you can also do what is going on in your pic, allowing the arms to take some of the weight.
Of course, arms and legs get tired eventually...
>>1179562
What this guy said.
Predicament bondage is absolutely an incredible specific subtype category of bondage. Instead of tying someone up and punishing them, you simply tie them up and have gravity plus muscle fatigue punish them for you while you watch. It's really useful if you are doing self bondage and don't have anyone to whip you.
At the beginning, there's not much pain or pressure but obviously over time muscles start to get tired and the pain increases slowly but surely. As soon as you relax your muscles, the pain spikes thus you keep them flexed.
When you think about it, it's not just hot and incredibly clever but also gives you a good workout among other things.
I absolutely adore the dildo stands where you get a long upright rod, place a dildo at the end of it, and force the bitch (or guy) to sit on it at the right height so that they can stand on their tippy toes. Their hands are tied so they cant free themselves or cover up so they are also exposed and vulnerable. This gives you lots of freedom while the slave suffers. You could always play with their nipples, clit, ass, and face while maintaining a constant pressure on them.
And if you want something really cruel, could always place something spikey beneath their heels so when they stand, not only is their pussy/ass hurting but so are their feet.
Happy hunting.
>>1179421
Bike on the right looks to be a Pope Roadster, 1900s-1910s vintage.
Left is probably 1930s/1940s or so, a rod-brake singlespeed with two(?!) bottle dynos.
>>1180410
Reason you don't see it with guys is because theres no demand for it.
Guys can do it too. I've done it before. Your urethra can compress and expand easily so I doubt you can damage it. The only thing that is guaranteed to damage the urethra is sounding. That's one of my limits. Never ever ever. Don't want to end up in a hospital.