My Sister's Mouth

"Well then how do you know you like it so much?" I asked her, genuinely curious.

She was now being completely open and honest with me. "Beth brought her dildo over one night to show me how to give a boy a bj, after I told her I was ready to try it with Kevin." Kevin was the boyfriend that had cheated on her with another cheerleader. "She was teaching me how so I wouldn't be terrible or awkward when the time came. Every time we practiced, I got more and more into it. I would get so horny, that's how Beth and I ended up fucking the first time. I begged her to help me come. I pretended I was blowing Kevin while she went down on me. Once I came, I knew there was no going back."

I rubbed her shoulder and arm, just listening to her. The conversation was starting to affect me, my cock swelling in my pajama pants.

"Then I found out about him and Kristen and I was so hurt, but I was also so disappointed. I REALLY wanted to do it, D. I wanted to blow him so bad," she looked me in the eyes as she said the last part, which caused my cock to lurch. Wow, she's really into it.

"So if it wasn't Kevin..." I started to ask her, but she anticipated my inquiry.

"You remember that guy from NC? When we were on vacation?" she asked me.

"The lifeguard guy?"

"Yea, Chris," she admitted.

"Oh," I said. I sat quietly taking it all in. In a way it made sense; she REALLY wanted to do it. Chris wasn't from around here and there was no way word would get around that my sister was some kind of cock-fiend.

"After we got back, I made Beth bring her toys over every time she came. She even gave me one to keep. It wasn't long until it got to the point where I couldn't come unless I had it stuffed in my mouth. D, what is wrong with me?" she started tearing up again.

"Nothing Anna Banana, nothing is wrong. Some guy somewhere is going to be the luckiest guy in the world when he learns this about you. I think it's hot and you're my sister for Christ sake!" I said before I realized exactly what I said.

She didn't miss a word. "You think I'm hot?" she asked, brightening up slightly.

"Anna, you're burning up." I smiled at her.

She guffawed, wiping away the tears before they fell. "Will you do something for me?" she asked me.

What could she want me to do for her? I thought, feeling very nervous again.

I tried to maintain my supportive, non-judging role, "Anything Anna, you're my best friend. Name it."

Then she dropped the bomb.

"Will you let me...do it to you?" she asked, serious as a heart attack.

I was stunned. "Anna....you're also my sister. That would be wrong. There has to be a line drawn somewhere."

"It doesn't have to be drawn there," she said. "I trust you, I know you won't tell a soul, you're here, NOW and Beth took the toy she gave me back when I kicked her out. I'm so horny, I masturbated for like an hour and I can't come cause she took her toy back," she was rambling, about to cry again. "We can turn the lights out and you can sit just like you were with her and pretend it was her all over again. Please D. I need to come and I can't without this." She was frantic now.

My heart hurt for her.

My dick swelled for her.

"Ok," I found myself saying. "Ok, come to my room in a few minutes, don't say anything; don't even turn the light on. I'll do this for you, but tomorrow you make up with Beth and get her to give you the toy back. Hell, I'll even buy you one, but Anna, if anyone found out about this we'd be in so much shit..."

"I know, D, thank you. Just pretend I'm Beth, no one has to know. Thank you, D"

Wow, I thought, she REALLY wants this. She acts like letting her blow me is a favor to HER. I thought about it a second, and realized it kind of was. She was going to masturbate while blowing me; I about fell over myself trying to get back to my room.

I stripped naked, grabbed a pillow from my bed and a clean t-shirt from my drawer. I set the t-shirt on the end of my bed for Anna. I figured Beth needed the towel, Anna might need something too, and I didn't want anyone stumbling around in the dark. I sat in my computer chair and placed the pillow at my feet.

And then I waited.

I didn't have to wait long, maybe half a minute had gone by before by door opened and Anna came in. I had told her I would pretend she was Beth, but that was for appearances sake. I didn't want her to know how eager and excited I was to get my dick into my sister's mouth.

I could tell in the moonlight she had her bath robe on. I had hoped she would come in naked, but it made sense she would wear something "just in case". She quickly discarded it, and was indeed gloriously naked underneath. Not that I could see very well in the extremely dim moonlight.

She fell to her knees in front of me, and began just as Beth had. It occurred to me that since Beth had taught her, and Beth's blowjob was incredible, this was probably going to be just as good, if not better since it was hot as fuck knowing my sister was the one doing it.

She got me nice and wet with her saliva, she used much more than Beth had, I enjoyed the added amount, as it allowed her hand to glide over my cock without pulling the skin as much. She then tongued my balls as Beth had, doing so before actually taking me in her mouth added to the eroticism. Like she was starting from the base and working her way up, which is exactly what she did.

She licked my perineum. She licked, nibbled and sucked my scrotum. She took each of my balls in her mouth and gently suckled them, all the while stroking my shaft with the same twisting motion Beth had used. She took both my balls in her mouth and sucked until my entire scrotum was in her mouth. I suddenly wished the light was on so I could see what my sister looked like with my balls stuffed in her mouth.

I will say one thing for this blind blowjob, sensory deprivation is real. Not being able to see, meant that I was feeling much more intensely. I could feel every movement of her tongue and her hand. I could feel her exhaling on my groin and the gentle shaking of her body that signified her masturbating herself. The realization that she was going to get herself off while blowing me surged through me, up my cock and out my urethra in a giant spill of pre-come. My sister chose that moment to cease her foreplay and get down to business.

She released my scrotum from her mouth, and licked from the base up to the tip of my cock, where she swirled her tongue around my glans, and fluttered it several times at the frenulum, the sensitive spot just under the head. She took the head of my cock into her mouth and repeated the swirling several times, this time bathing the head in even more saliva. After a minute or so of this treatment, she began her descent. She took about half into her mouth, just as Beth had done, before coming back up. Each time she went down, she took more and more. On the 6th down stroke, I felt a tightness surround the head of my cock, which undulated several times and then began rhythmically squeezing it.

Un. Fucking. Real.

I couldn't see, but I knew that my sister had my cock firmly planted in her throat. She had taken all of me, which is something Beth either couldn't do, or didn't do. It appeared that in this case, the student surpassed the master.

She finally came up for air, and resumed stroking me with her hand. I could feel her trembling increase, that deep throat trick must have really done a number on her too. After kissing around my shaft a bit, she repeated what she had just done, taking half, and then more until I was once again buried in her throat. I could feel her lips on my groin open as she extended her tongue to lap at my balls. She took her hand off my hip and was just using her mouth, taking my entire shaft with each gulp, moaning each time she reached the bottom.

"You're going to make me cum, Anna," I finally spoke, acknowledging who was doing this to me. It proved to be exactly what she wanted to hear. She took me deep into her throat twice more, stopping on the second time, moaning as best as she could with my cock stuck in her throat, reaching her own climax just as I reached mine.

I came with her, shooting my cum right down her throat. She made more swallowing motions, which just squeezed the head of my cock some more, effectively milking me of anything I had left. She stayed there for a good while, riding out her own orgasm with my cock stuffed in her mouth.

She finally surfaced, gasping for air. I handed her the shirt I had stashed beside me for her, which she took immediately. We both just sat in the dark, enjoying the bliss that followed our mutual climax for at least 2 minutes.

She finally rose and turned to leave, opening my door slowly. As she slipped through it, she stopped and said softly, "Thanks, D," and then she was gone.

My sister just thanked me for the spectacular blowjob she'd just given me. This was going to be an interesting summer.