mslut41's blog post - Youthful Enthusiasm continued

Having played with these 'kids' a few more I've found out more about them. They all attend a local high school, are 17 years old and in grade 12. Every time we meet they have boundless energy and creative imaginations. I am totally exhausted after our encounters. My cunt is usually gaping and my clit and balls sore.
The last time we met they had me all bound in tight bondage. I was on my knees with my hands tied behind my back. A spreader bar kept my legs apart and hole spread. They also put a dental gag in my mouth to keep it open. We were in Tina's basement rec room, while her parents were away for the weekend.
The guys, Bill and Tom, took turns fucking my holes. They had both taken some Viagra because they wanted to be able go all night. They used my cunt, my mouth and Tina's cunt for a couple of hours straight. They must of fucked my cunt a dozen times before they finally decided to take a break. They never came in my hole, they saved thier cum for Tina's cunt. Her cute, little hole was overflowing with thier spunk.
While the boys were taking a break she removed the dental spreader and ordered me to clean her cunt. The boys always loved when I ate thier cum from her holes. As I was doing this they decided to go out and get some booze. They got dressed and left.
As soon as they left Tina got up and went upstairs. She came back leading the family dog, a big Rottwieller. She brought it around front and started massaging it's cock. Soon it dropped out of its sheath, it must of been ten inches long! She smiled and explained the dog was well trained. With that she led the dog closer and told me to open my mouth. I obeyed and she placed the cock in my mouth. "Suck," she ordered. I started sucking and the cock quickly grew. After about 5 minutes she told me to stop and brought the dog around back. "Mount," she said. The dog jumped up and started thrusting. She grabbed the cock and placed it at the entrance to my cunt. With one thrust the dog thrust it all the way in. I let out a big moan. Tina laughed and said, "good boys."
The dog fucked in short, fast thrusts. After a few minutes it's knot started to grow. The knot slipped out a couple of times but on the third try it had grown enough that it stayed in. It continued to grow! Tina said it was about as big as a softball. I whimpered as it reached its full size. Once it was seated I lost control of my bladder and started to drip piss. Tina was prepared, as she placed a bowl under me. After a few minutes my bladder was empty and she removed the bowl and started playing with my cock.
I was knotted with the dog and she was milking me! I couldn't believe it, but I got semi erect. She then started sucking me and I got fully erect! She smiled and said, "you are now a faggot dog slut." She slowly milked my cock until the dogs knot started to go down. She went to the couch, spread her cunt and called for the dog. It yanked its knot out of my cunt. The pain was intense and I must of passed out because the next thing I remember is the boys spit roasting me.