It was thrilling when the cane caught one of the pins,pain was now a d**g to both of us.On another occasion she handed me a piece of wood ,a small ham...er and some tacks.'I want you to nail your scrotum to the wood so that it is stretched’ she said.I placed the wood on the arm of a chair and pressed the first tack so that it pierced the skin and then hammered it through . The pain was exquisite. It took another 8 or 9 tacks to fully stretch the skin of my balls on to the wood. This excited both. I didn't ask her or look for approval. I was taking her and that was all there was to it. I reached up and pulled the crotch of her bikini to the side and took a brief moment to admire her glistening lips. As I watched her hole began to gape a little and a fresh drop of her cum trickled out and down. I dove in, tongue first, making sure I caught and didn't waste that precious drop. I immediately began slurping, sucking and licking her to the absolute best of my ability. I felt Jeremy's hands on. The car then sped up and drove off and to this day i have no idea who saw us. An old lady, young man, middle aged couple who knows? But whoever it was sure had a good view of us for a few seconds. The getting caught bit felt incredibly horny as i had never had such a experience before.After that we sped up our walking but still couldn't keep our hands off each other. Constantly fondling each other. I was rubbing her crotch from outside of her panties and could feel how damp and moist she was. As he continued his thrusting with his penis, stroking me, rubbing my breasts, I felt the orgasm coming on. Feeling his muscular body pressed against my back.... I came like a tidal wave, I was just lost as I climaxed, shouting, "Oh, God, Oh, God....Marcus, stop, Oh, God...!!" It seemed to last an hour, and when it was done, I was exhausted, physically as well as emotionally. I can't believe I had an orgasm in front of my son. I was too exhausted to ponder the fact that my son had caused my.