I learned about the Flanders Bench over twenty years ago; it's a way for a ticklee to see her/his own feet being tickled.
This is the best description of the Flanders Bench that I can give.
Imagine that you are barefoot, and you lie face down on a bench. Then, you are physically bound to the bench -- you can't move at all.
(Also, the ticklers/riggers may restrain your head so that you can't move your head either.) Your feet hang off the bench; they are immobilized as well.
Behind you is a video camera. It's not recording anything, but the feed from the video camera is sent to a television screen that is positioned RIGHT IN FRONT OF YOUR FACE.
You can see YOUR OWN BARE SOLES RIGHT IN FRONT OF YOU.
If they immobilized your head, that means no matter how much you try to turn or twist your neck, that television screen WILL ALWAYS BE IN VIEW.
Then, of course, the ticklers go to town on your sensitive soles... and you're witness to ALL OF IT. Up close, and in living color.
It's a GLORIOUS MINDFUCK.
I got to witness this IN PERSON at a tickling gathering that I co-hosted with my then-wife in Albany NY in the spring/summer of 2001. A local ticklee (let's call her Michelle, even though her real name is Diane [just kidding!]) knew about the Flanders Bench, and she had been fantasizing about being in it for quite some time. Michelle JUMPED at the opportunity to get into it when she learned that
Kujman, the person who actually
invented the Flanders bench, would attend our gathering.
We were not able to position a television right in front of Michelle's face, but that led Kujman to another idea. He paid Rent-A-Center WITH HIS OWN MONEY for a big-screen TV (remember that this was 2001, before flat-screen TVs existed) for this purpose. We put it at the opposing wall of the Flanders Bench, so that not only Michelle could see her bare soles being tickled, but that also EVERYONE ELSE AT THE GATHERING could see them as well.
Michelle was mercilessly tickled on her bare soles for A SOLID HOUR, and she loved every second of it. I will NEVER forget her laughter.
Also -- and you can confirm this with anyone who was there -- it was obvious from the noises she was making that she had AT LEAST seven orgasms during that hour. (No genital contact. That's how sensitive Michelle's soles were -- and probably still are. One of the first things I learned about Michelle is that her feet were -- and probably still are! -- a MAJOR erogenous zone.)
Ah... memories of my twenties. I used to have them often... but now I control that with medication.
A decent picture of the original idea of the Flanders Bench can be seen at:
http://www.ticklingforum.com/attachment.php?attachmentid=444214&d=1427934392
(Please note that this post has been duplicated as its own post, in the
Tickling Discussion forum.)