Day 27: Tuesday

After a break on Monday, we’re back today, well-rested, horny and eager.

I read about something yesterday, and I want to try and see if it’s true. Apparently, if you tie someone so that there is a lot of strain on the skin, and then if you whip that stretched skin, it is more painful than without the bondage. So, today we will conduct an experiment!

In phase one of the experiment, I have Anna lie on her back, legs in the air, and then I whip her ass with a flogger 10 times. I have her note the amount of pain this causes her (apparently not too much, as she remains silent and unmoving).

In phase two of the experiment, I put my sister in a strict hogtie - still on her back, but now her legs are tied above her head, and her arms are tied to her legs. This stretches the skin on her ass taut, which is just what I want. Now I whip her ass another 10 times with the same flogger. I can already tell that it is more painful, but this may also be a result of the previous whipping.

To get a better comparison I release her again and then whip her a final 10 times. This allows Anna to compare the difference between the increase in pain caused by the bondage versus the increase caused by the previous whippings.

Well, according to my sister, stretching the skin does make the whipping more painful, but “not by a whole bunch”. Okay, good to know. I’m sure it will come in handy. But enough of that for now.

I’ve collected several clamps that I now want to use on my little sister. Some are from her own collection, some are from the tool-section of the garage. But, speaking of her collection ... I wonder how she got so many toys. Her allowance is not higher than mine, and some of that stuff is not cheap. So while I untie her and have her stand up straight, I ask her about it.

“I got them off the internet. Mom gave us a credit card for books and stuff, and the card statement only says ‘Amazon’, but not which items I bought. So every once in a while I snuck in a whip or a pair of clamps or something.”

“Huh, that’s pretty smart.”

“Yes, I am!” And she smirks at me. Of course.

With that mystery solved I am now even more motivated to put some clamps on my smirking sibling. To get us started, I put two large metal clamps with rubber tips on each of her small tits. The clamps are so large, they almost swallow her buds whole, only the nipples sticking out. That’s good, because that gives me the opportunity to put strong alligator clamps on those protruding points.

Two more of the large clamps go on Anna’s pussy lips, sealing her shut. I finish the seal with the three remaining alligators (or is that crocodiles?). The first goes to the bottom, barely catching enough labia to hold on. The second goes between the two large clamps. And the final one goes right above her clit!

The clitty-clamp should have been the finale, but I decide to add two more of the large ones to her arm-pits. This also forces her to keep her arms up above her head. Bonus!

With my sister nicely adorned, I fetch a final item: a set of old fishing weights, unused and abandoned on the garage. Oh, and some twine. Because now I use the twine to tie one of the weights to each of the clamps. First the large ones on her tits, then on her pits, and finally on her pussy. Then the alligators on her nipples, and at last the alligators on her lower lips.

If my sister is to be believed, this is already quite painful. But “quite painful” is for ninnies. I position myself standing behind her and without warning or preparation push my cock into her ass. And then I fuck her, fast, rough and relentless. This makes all the weights swing around and thus brings us to the pain level I was aiming for. Anna seems to appreciate it as well, judging by the amount of crying and cursing that is going on. Also judging by her massive orgasm.