This bulging, hard stick that pointed straight up fascinated her. As she stared intently at his tool, she stopping just short of grabbing it.Her eyes ...ropped down to take in that funny lose sack that dangled between his legs and rested on the bed. Gently, she reached down and picked up his testicles, exploring each new wonder. After she had investigated each fold and lump, she eagerly allowed her hands to find and lock themselves around the base of his slowly throbbing penis. While still. And, more importantly, it looked quite spankable. As I surveyed what was being offered, my cock began to harden. I placed my hand on the smooth, soft skin of Therese’s bottom, running it over the curve and texture of both cheeks. Roughly squeezing one cheek, I tapped the other with the handle of the punishment implement. She moaned, and I caught the whiff of female sexual arousal. “How hard?” I asked. “As hard as you believe I deserve”, she whispered. Drawing back, I brought the strap down. It rubbed against only the top of his knob, but it was exquisite. Suddenly, he knew he couldn’t last long this way, and stopped, to concentrate on nursing.“Don’t stop!” she complained.“If I keep going, I’ll finish,” he said. “Then I’ll go soft.”“No, no, no!” she gasped. “You have to stay hard.”“Then I can’t move,” he panted. “Not in and out.”“Crap,” she groaned. “I was almost there.”“I can go some more when I calm down.”“Ooooo,” she moaned. “I want to cum so bad.”“You’ll get to cum,” he. I am Sonu, my twin brother is Monuand elder bro is Rinku. Our sister is youngest -18 years -Pinky. We 3 brosshare one room, Pinky being a young girl has a separate room. Ever since mychild hood days we all have seen each other grow with changes in our bodies. Wecould see our sis grow into a real sexy girl and she would wear tight jeans,skirts and sleeveless tops, exposing many of her assets.I could see my brothers staring at her and trying to see inside her T shirtwhenever she would bend down.