WWeeeeeeeeeeelllllllllllllllll......
Kryptonite is a very deadly and dangerous way to be brought to your knees. it also means that prolonged exposure is much more likely to cause serious side effects such as death, loss of vision, loss of hearing, difficulty breathe, or loss of bowel control. (Just ask Superman!).
Now... there are much less dangerous, and some even more pleasurable ways, to be brought to your knees. i'm pretty sure if you need examples, some of the

's here might be able to give you some examples of their favorite methods.