The clover clamps are attached to my nipples. I'm naked and blindfolded. My arms are behind my back, left hand holding right forearm; right hand holding left forearm; bondage tape holding them securely in place. My legs are cuffed to the spreader bar at my ankles, and the bar is extended as wide as it will go. There are two weighted metal kegel balls inserted deep in my pussy.
You have affixed one of your short heavy chains to the center of the spreader bar, and you have used a carabiner to fasten the chain of the nipple clamps to the chain on the spreader bar, which forces me to bend over (the nipple chain itself is 12 inches, but it extends to almost 19 inches including the length of each clamp. This means it's almost exactly 9 inches from my nipples to the center of the chain when both clamps are attached. [Yes, I have actually measured this with a tape measure]). You have chosen to fasten it to a link of the bottom chain that ensures my back can be raised no higher than parallel to the floor.
You're fucking my pussy from behind. Your hands gripping my hips are the only reason I'm not falling over on my face, since I have no means of supporting or bracing myself. With every deep thrust of your cock, my torso is jerked forward, causing the clamps - already unforgiving due to their attachment to the spreader bar - to bite harder into my nipples. The pressure of your cock against the kegel balls inside my pussy creates powerful internal sensations.