My FWB, a woman, is into BDSM and has been introducing me to it. I like to hurt her (and she likes to be hurt), but I am having trouble finding good ways of doing it. Unfortunately, we both have roommates, so I can't really spank, flog, or whip her as much as I want to because these methods make too much noise. So far I have mostly been relying on pressure points, pinching, squeezing, and biting. Can anyone give me other good ideas for how to silently cause pain? Thanks!