My boyfriend is obsessed with nipple weights -- on me that is.
During sex he puts clamps with weights on my nipples. He likes me to be on top often because he always want to look at the weights hanging and swinging from my long nipples. He asks me constantly to keep them swaying because it turns him on to see my nipples being pulled around in all directions.
I have B cup breasts with large protruding nipples, and he almost always attaches weights onto them. He keeps buying me new clamps and devices to put on my nipples to turn him on. And he just can't get enough of staring at my nipples being pulled, twisted and stretched by these toys. He wants to see just how much weight my nipples can stand, so he keeps attaching more until the clamp on my nipple can't hang on. Then he uses tighter clamps so that he can hang yet more weight on these poor nips of mine.