My sister Sara and I have been sharing an apartment for just over a year now, and it has gone surprisingly well. That said, walking in on each other in the middle of some salacious act of one kind or another has been common enough that we have given up trying to avoid it.
I hear the familiar sound of my sister's key in the deadbolt and the click of the lock opening. The hot Latina swallowing my cock startles like a teenager getting caught making out under the high school bleachers, and I can't help but laugh a little.
"That's just my sister, relax." And I guide my cock back into her mouth. She makes that unique gagging sound that is universally recognized as coming from choking on a big cock but continues sucking and stroking without breaking her rhythm. Compensating for her inexperience, she takes my thick cock with enthusiasm and determination making me even harder. I let out a bit of a moan as they walk by, placating the exhibitionist in me.
Making their way to my Sara's bedroom I can hear her telling her new acquisition of the night, "That's just my brother. He's got a thing for being sucked off in places people will see. It's amazing what girls will do if you buy them a few drinks."
My sister's friend stops to watch as the girl picks up the tempo, cupping my balls in her hands while I fuck her mouth. She takes the length of my erection down her throat with each stroke, and it feels amazing. I love an audience, but my sister takes her one-night stand by the arm to lead him past the show and into her bedroom. He looks back over her shoulder eager to see more, and that's all it takes to push me over the edge. Letting out a moan I'm sure can be heard throughout the apartment, I explode in her mouth. Hot cum spills onto her tongue as she tries unsuccessfully to swallow the whole load. Holding her head in my hands, my body trembles until the wave of ecstasy washes over me.
We make eye contact, and she has that, "what now?" look on her face, wiping cum from the corner of her mouth.
"Well, it would appear you like cock after all. Congratulations on giving your first blowjob. I told you if you gave guys a try you might like it."
I'm amused as she gathers up her things and leaves. I honestly don't even know her name. She is a self-proclaimed lesbian that got drunk with me at the local dive bar, and she wanted to taste a cock for the first time. I love being in the right place at the right time.
Even more than lucky timing, I love when people watch and my favorite voyeur is my sister, although I would never tell her that.
After our parents decided to tie the knot, my stepmom and stepsister moved in with us. I was nine and she was seven at the time, and it felt awkward having girls in the house. As we got older, I started to really take notice and found myself attracted to her before I knew what to do about it. I've watched her develop from a nerdy little buck-toothed girl to a sexy and seductive woman over the years. I spent many nights masturbating to images of her body flashing through my mind, like a collage of her various stages of development. My imagination ran wild with thoughts of what she must look like naked, and what I would do to her if she wasn't my sister. Watching her flat chest blossom into luscious round tits made my young cock hard, and I did my best to only steal glimpses in passing. Staring at my sister's tits would be beyond inappropriate. Her hips and ass transformed her figure from boyish to one that drove boys and men wild, me included.
To this day I am definitely hot for her, and I wage a mental war against wanting her and respecting societal morays. We may not be related by blood, but she certainly feels safe around me. Safe enough to walk around in her bra and panties like I don't exist. Part of me wonders if she does it on purpose to get me hot. I sometimes think she wants me too, until the voice of reason jumps in, and in a sobering voice says, "She's your sister and she doesn't want you to fuck her."
What the fuck does the voice know anyways?
I stop daydreaming and snap back to reality. Heading off to shower, I hear a heated conversation coming from Sara's room. I stop to listen, partially out of curiosity and partially because I want to make sure everything's okay.
Their voices escalate to argument levels, and I decide to step in. Sara may be a bar slut, but she's still my baby sister. I open the door and see Sara on her knees wearing nothing but her thong panties. She has tears in her soft blue eyes and mascara running down her cheeks. Standing in front of her is Mr. "I don't give a fuck what his name is" with a limp cock and his pants around his ankles.
"Why the fuck is my sister crying, asshole?" I demand menacingly.
Before he answers my sister jumps in, "Dumbass didn't have a condom, so I told him he can't fuck me. I offered him a blow job, but he apparently can't manage keeping his tiny cock hard and he's blaming me."
He doesn't take the insult lightly and is clearly restraining himself from backhanding her, with the only thing holding him back being the fear of what I would do in retaliation.
"It's like getting a blowjob from a shark, all tooth and no lips. I don't need this shit!" he says looking at me as if I'm supposed to be sympathetic. I guess there's a bro code but that doesn't apply when it comes to my baby sister.
"Put your fucking dick away and get the fuck out of here. You make my sister cry again and I'll fucking break you. Do we have an understanding?" He scrambles to pull up his pants and runs out the door.
With him out of the way I can focus on Sara and find out what the fuck is going on. Sara springs to her feet, wrapping her arms around my neck and burying her face against my shoulder. I hold her close until she calms down and I try to be supportive and sympathetic, but her nearly nude body against me feels amazing. Her round firm tits pressed against me is more than enough to make me hard and I have to adjust my position to make sure she doesn't feel my erection.
"You know he's right." Sara mumbles in a low voice, like she's a child confessing to raiding the cookie jar. "I'm terrible at giving head. Every guy I've ever blown told me so."
"C'mon, you can't be that bad." I respond awkwardly, unsure if she is looking for reassurance or advice.
Sara pulls back with a look of determination on her face, and confidently announces, "I've just had an epiphany and I know what I need to do."
Frankly, it's hard to take her seriously, standing there in a thong about to make a declaration of some sort. All I can think of is how badly I want to ravage her, sister or not.
"I'm going to talk to cousin Beth. In our "girl talk" conversations, she is always talking about how much she loves sucking dick. I'm going to ask her to teach me."
"
That's actually not a bad idea." I'm thinking you have to learn somehow and they don't teach cock sucking in high school sex education.
I'm so hard it aches, and I can't wait to get into the shower and relieve the tension. It only takes a few strokes before I release what feels like an endless stream of cum. Fuck, she has to know what she's doing to me. Can she really be that naïve?
The memory of her soft skin and firm breasts pressed against me occupies my mind for the next two days. I come home to find Sara and Beth sitting in the living room, and I can only imagine that Sara is getting a lesson. Good for her.
"Hey Beth, I haven't seen you for a long minute. What are you up to?"
"The usual bullshit," she says. "Although today I'm trying to play teacher and educate Sara about the finer nuances of oral sex."
"Well how is that going?" I ask. "I'm sure that if anyone can help her it's you Beth. Every bathroom wall in town attests to your oral prowess."
"Well, first of all that's hilarious. Second, fuck you. Third, not so well. We need to go all the way back to the basics which is entirely unexpected. After hearing what happened the other night, I think we are going to need a test subject."
"You need a test subject?"
"I need feedback. Sucking a dildo doesn't help. Can we borrow your cock? It would be for educational purposes."
"Did you forget, I'm your brother?"
"Stepbrother. Besides, I know I make you hard. It's kinda hard to hide when you're excited."
"Then you realize I've been behaving, in spite of the fact that you get me hard. This is a little bit crazy."
