I put myself in self bondage using a timed lock, but not without attaching some clamps to my nipples of course! I adjusted the clamps' rope length so that I was forced to tiptoe, and as my legs grew tired, I could only drop down to my feet causing my nipples to get twisted and stretched, and crushed by the clover clamps that tighten when they are pulled. As the pain in my tits grew I would try to get on my tiptoes again and the process would continue with ever increasing pain. My nipples were thoroughly and properly tortured and ruined during the predicament.