Kinky is or was not my inclination until I tried this device. Yes, it can cause pain or discomfort. Yes, if your Mistress decides to employ this device you will have to man-up. I am uncircumcised and wear it over my foreskin at the moment. I tried it on my uncovered frenulum and it was very unpleasant at first. I suspect after a while I will be able to endure it and enjoy it. My Mistress is very gracious and well experienced. I am the first to volunteer for this product.
The item, as usual, is well made and is really a joy in design. Remember to lubricate the screws periodically and keep your hex wrench in a familiar place, if your Mistress or Master allows it.
This is a nice way to enter another side of sexual and behavioral discipline.