Half-Sister and our Great Dane

By unusualappetite.

When I was 18, I was headed to my room one evening and heard some strange noise from my older Sister Linda’s room. I pushed the door to her room open just enough to be able to see what was going on, and Linda was sucking our dog’s huge cock. She is turned so that Roscoe is licking her cunt while she sucks his cock, she is moaning more and more as he licks her cunt, and she is increasing her tempo as she bobs up and down his swollen member. Unknown to me why, my cock is growing inside my jeans, getting harder than I can ever remember it being. I am amazed by how she can take his cock all the way down to this huge swollen part at the base of his cock. His cock had to be 10″, and she was swallowing all of it.

Now I had my cock out and was stroking it, imagining Sis was sucking me, and it wasn’t long before I shot a huge load of cum all over the wall. I ran to my room, grabbed my Polaroid camera, and quietly entered her room. She was too occupied to notice me, and I snapped a picture of her actions. The flash caused her to pull off Roscoe, and as she did cum was spraying all over her face.

“What the fuck do you think you’re doing?” she yelled.

I looked at her cum soaked face and said, “I think you’re going to do anything I want, or Mom and your friends see this picture.”

“Just what is it you want?” she asked.

My reply was, “Sex, any time and however I want it.” I told her our first session would occur since Mom would be gone for the weekend.

*****

Saturday finally came, and Mom left. I told Linda to get undressed and follow me to the shower. We got into the shower, and I told her to wash me, which she did, and when she got to my cock and balls, she slowly soaped them and started stroking my cock. I was getting hard, and she rinsed the soap off and started sucking my cock, without having to be told. Now my cock wasn’t near 10″, but it was 7″ and quite thick, she swallowed it down to my stomach several times, and I was ready to shoot my load. I grabbed the back of her head and shoved my cock hard into her throat, holding her head there, yelling, “Swallow all my cum, slut Sister.”

She did without missing a drop. Linda then told me she wanted to get into bed and fuck. I laid down, and she straddled me, her cunt inches from my face. “Lick it,” she said.

I did without hesitation, and while doing so, she held my hands on the bed over my head, and suddenly, she slipped ropes over each hand, tying me to the headboard. Grabbing my legs, she tied them to the foot of the bed and said, “Now it’s my turn.”

I had no idea what she had in mind as she left the room, returning shortly with Roscoe. She also had my camera and some peanut butter with her. She took some peanut butter and spread it on my cock, balls, and down the crack of my ass. Next, she coaxed Roscoe over until he got the scent of the peanut butter, at which time he started licking. As his tongue reached my ass and he was licking hard, trying to get all the peanut butter, my cock started to get hard, and I was trying to push my ass towards Roscoe. His tongue licking my ass was driving me fucking crazy.

Linda is snapping picture after picture and telling me I’ll do as she says. Roscoe had pretty much cleaned off my balls and my now hard cock. I told Linda to let me loose so that I could get on my hands and knees, and she could put more PB on my ass for Roscoe to lick. She untied my feet but left my hands tied and told me to turn over and rise on my knees, which I did. She spread PB on my ass and then, to my surprise, slid some into my ass. Roscoe’s tongue was working double time, and he was licking inside my ass to get to the PB; Damn, I couldn’t believe how FUCKING horny this was making me.

“FUCK, LINDA. I’m Going to CUM,” I moaned.

She quickly got under me, and just as she got her face in front of my cock I shot a huge load, hitting her in the face until she got her mouth on me and finished sucking me dry. The next thing I realized was Roscoe was on me, trying to shove his cock in me.

“NO, Linda, get him off me,” I yelled.

Linda laughed, and I thought she was going to pull him off, but instead, she guided his cock to my asshole and allowed him to start pounding my asshole with that huge canine cock. At first, it hurt like hell, then it started to feel good, and my cock was again getting hard as a fucking rock. Thank God Linda kept him from pounding his knot into me. It wasn’t long before I felt him fill my ass with hot dog cum, and I shot another load of cum on the bed without any help from my Sister.

Linda pulled his cock out of my ass, and I could feel his jizz running down the crack of my ass which Linda licked up. After all this, I’m too worn out for anything more than a shower.

After a rest, I walked into my Sister’s room, and she was asleep, so I jumped on top of her and tied her to the bed. Now, it was her turn for the dog. I forced her up on her knees and got Roscoe, he needed no coaxing to lick Lindas’ cunt and ass, and she was turned on. I could see the juice oozing from her cunt as Roscoe continued to lap at her. While he was enjoying licking, I started jacking him off, getting his cock ready to fuck my slut of a Sister. Once his cock was nice and hard, I guided him to her ass to return the favor. He was pounding her, and she was yelling, “FUCK ME WITH THAT BIG COCK; I WANT HOT DOGGIE CUM IN MY ASS!”

I was once again hard and decided that I was going to fuck her mouth while Roscoe had his way. As I started to fuck her mouth, she let out a scream. “He’s ripping me apart!”

I looked and realized that he had pounded his huge knot into her asshole, and they were now locked until he was done. I grabbed her head and started fucking her mouth. I pushed my hard cock to her throat, and when she gagged, I held it there til she couldn’t breathe, then pulled back just enough for her to catch her breath. After about 7 times my cock popped into her throat, I knew I was about to cum and shoved hard as deep as I could, pushing into her throat where I held it unloading a huge HOT LOAD OF CUM.

“AHHHHHHHHH FUUUUUCK!” I moaned as my jizz filled her throat.

By now, Roscoe was cumming in her asshole, and she was delirious. “OH GOD FILL MY ASS WITH CUM,” she yelled.

I had to hold Roscoe down afterward as he was trying to pull out before the swelling in his knot went down.

We had many more fun times after this.

 

The End.

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