Slavery: A series of erotic games (book 01)
"A female slave is placed over the bar and it's adjusted so she can barely touch the floor on tiptoe. Of course, your legs get tired from standing on tiptoe for too long and you have to rest, but only by putting your weight on the bar, which crushes your cunt. It's quite painful. As soon as you can't take it any longer, you stand on your toes again, but you can't for long, so you go back and forth between aching legs and feet and a sore cunt. Fortunately, most people here are unwilling to use it, but there are some. At least this bar is flat on the top. I understand some have a beveled edge. In the Middle Ages, they used these with blades on the top to torture and kill women."
I shuddered, a