It was the best feeling in the world. She pumped up and down on my cock and I watched it enter my grandma. I couldn't believe this was happening, it a...l happened so fast. She was going faster and faster, I watched her tits bounce up and down, I grabbed them and they were so nice I couldn't stop. I grabbed her, and rolled her over, sat her up on all fours and stuck my cock deep into her pussy, I put my stomach on her back and fucked her doggy style."Oh god grandma, this is fuckin great, oh. What are you looking for tonight?” said the voice.I turned towards the sound, allowing the speaker to get a better view of my open shirt. “Oh, I don’t think you would enjoy the kinky thing I am looking for tonight,” I replied.“Whoa, don’t sell me short,” he said. “I don’t think anything with such a sexy ‘thing’ as you could be anything but enjoyable. Try me!”“OK,” I started as I turned to him and put one arm on his shoulder. “What I am looking for is to take a man to the park across the way,. “You know what’s going to make ‘em even nicer? My dick running in between them”. Tony said with a grin on his face. By now we were all three rubbing our cocks in our pants in anticipation of her removing the last little piece of clothing she had. “OK slut, you know what comes next. Get those fucking granny panties off.” I ordered.She took a deep breath in and pushed her underwear down below her pussy revealing a little dark, trimmed ‘landing strip’. She continued sliding the back of her panties. ? I said.I lowered my head to hide my relief that it was over. His punishments for not saying it just the way he wanted to hear it were severe.?Good.? He said.The collar he snapped on to my neck had the word slut pierced through it in shiny metal studs. He liked to walk me through the mall wearing that thing. We would go through the stores with him picking up things for me to buy him. All the while I was terrified that someone I knew would recognize me. That collar brought back all the shame,.