Have you seen those women with large collagen lips? They always look so inviting. Marcia from work was this type of woman. I had been trying to get her attention for a couple of months. I finally convinced her to go out for dinner. After some dinner and wine I got her back to my place. Even better we headed back to my bedroom. We both stripped out of our clothes and we landed in bed.
I wanted Marcia to suck my dick so badly. I'm not telling a fable but my dick is nine inches when erect. It isn't all it's cracked up to be. Many women tell me it hurts too much when we try and have sex. Boy, is that a buzzkill. I thought I would get Marcia to lie with her head hanging over the edge of my bed. I slowly slipped my dick past her lips. She seemed to be taking most of my shaft.
I speeded up and pushed deeper. I could hear Marcia gagging. I just couldn't deny myself. I kept pumping. Right about then, I heard my name being called out. I looked to the doorway and there stood my sister Cindy. The look on her face said it all. She was shocked to see her brother being sucked off by a strange woman.
I made a giant mistake giving my nineteen year old sister a key to the front door. I would ask her to check in on my house when I was away on business. Cindy took it upon herself to just unlock the front door and come barging in.
"I'm sorry Brad, I'll stop back later," she said.
I had pulled out of Marcia's mouth as soon as I heard my sister talking.
"Who the hell was that?" Marcia quizzed me.
"That was my younger sister who doesn't know how to knock on the front door."
The spell was broken for that night. Marcia quickly got dressed and marched out of the front door. I knew wouldn't be getting a second date. I sat and stewed for the next couple hours. The next morning the doorbell rang. Surprise, surprise, it was my sister.
"I know you're angry at me Brad. I won't do it again."
"Damn right I'm angry. You're old enough to know I might have guests over."
It got quiet between us. I couldn't stay pissed at my sister for long.
"I never saw one that big before," Cindy told me. "Can you let me see it?"
"Are you totally crazy? You and I are brother and sister."
"I promise not to tell a soul Brad."
Cindy kept harping on me about my cock. That girl could push all my buttons at times. I knew she wouldn't let up.
"Just this once, okay. Never ask me again."
I pulled down my zipper and freed my cock. Just like that, Cindy walked over and wrapped her hand around my dick. She totally took me by surprise.
"Don't do that," I said to her.
She didn't listen to a word I said to her. She quickly knelt down and brought my cock to her mouth. She surrounded me with her lips and began to go down on me. I knew I should make her stop but it felt too good. Cindy didn't take very much of me but I could feel her tongue hitting the underside of my shaft. I shouldn't have done this but I placed my hands on the back of my sister's head.
I was now throat fucking my younger sister and it felt so damn good. Cindy would look up at my face occasionally. It was like she wanted to check and see if she was pleasing me. She was pleasing me alright. I pumped more and more of my dick down her throat. She was gagging just like Marcia did. My sister didn't try pulling away.
I could hear my balls hitting my sister's chin. Slap, slap, slap. It sounded loud to me. I couldn't bring myself to stop. Cindy took me for maybe twenty minutes. I finally felt my balls pinching. I was getting so close. I couldn't bring myself to tell Cindy I was ready to unload. I thrust into her mouth one final time and I blew my load.
Cindy's head snapped back when she felt my cream rushing down her throat. I could see her continuing to swallow my hot seed down. I definitely had a big load saved up from when Marcia was here. White cum was running down my sister's chin. What can I say? This was the most erotic, forbidden blowjob I had ever experienced. Cindy squeezed my balls and got the last drops of my semen from me.
"Do you always have that much cum?" My sister asked as she pulled away.
I told her it wasn't everyday that my sister was giving me head. She smiled and found some tissues to clean up with. I put my cock back into my pants. I had my sister sit down in the couch next to me. I told her we couldn't go around talking about what we had just done. Cindy understood perfectly. My sister ended up leaving me with a spent prick.
 
                             
                         
                         
                         
                         
                         
                                 
                                 
                                 
                                