A penultimate pleasure.

The movie theater is only a few blocks away from the restaurant and, given the gorgeous weather that's been lingering late into the fall, you decide to walk there hand in hand. Sometimes it's the simple things in life that give the most pleasure and your sister's soft hand in yours rivals some of the more intimate moments you've experienced with some of your previous girlfriends. Not that I'm ever going to trade blowjobs for handholding, you think. But I can't deny that this is already the best date I've ever been on.

Your cheeks tighten as a smile you didn't even realize was there widens further. Shelly is a ball of pent up sexual energy, her whole frame jittering like she's gotten the shakes from too much caffeine. You understand that feeling as your cock, still massively erect from all the teasing done during dinner, is threatening to burst free of your pants and throbbing with an exquisite pain. With every step you take, your shaft rubs against cloth and you can tell that if you don't get relief soon, there may be a giant sticky mess to take care of.

Suddenly, with a quick jerk that forces you to follow her, your sister pulls you into a tiny alley between a couple of shops. You look around, confused. This isn't the way to the theater, crosses through your mind briefly. Then, with a growl that sounds like it could come from a tigress in heat, Shelly ducks behind a big metal dumpster and throws her back against the wall. With a sultry look that does nothing to alleviate your hardon, she pulls up the bottom of her dress lets you get a good look at her smooth mound and glistening pussy lips. She grabs the tie you're wearing and reels you in like a fish, smashing her mouth against yours and kissing you like you've never been kissed before, filled with a limitless desire and unspoken promises of love and lust.

Shelly stops and takes a shaky breath. With her lips almost touching yours, she says, "I told you that I need a fucking orgasm." She pauses, her insanely gorgeous blue eyes holding you in place. "Want your after dinner desert?"

Fuck yeah I do! your brain screams, but a loud minority also makes you hesitate for a moment. "What if someone sees us?" you ask, giving her one final chance to step back.

She doesn't even blink. "Then let them fucking watch," she practically screams. Her teeth are bared in a animalistic grin and her lower half is writhing in anticipation. She gives you one more quick kiss, then says, "Now please, big brother, eat my pussy and make me cum!"

Her hands wrap themselves in your hair as you fall to your knees and inch forward, uncaring of the dirt and grime on the floor of the alleyway. Shelly wantonly widens her stance, making room for your entire body between her legs, and you rest your hands on both of her creamy thighs. Judging from her eagerness and lewd abandonment of any sense of propriety, you doubt your sister is looking for a lot of foreplay, so you dive right into her seeping gash and slide your tongue as deep into her hole as you can. It tastes sweet and a bit salty, but better than any other girl you've ever gone down on. You find yourself liberally lapping her juices up, as if your tongue was the only thing prevent a flood of momentous proportions, and your sister urges you on with a constant flood of muttered encouragements.

"Oh yes, that's it! Oh shit, oh fuck, how is your tongue fucking doing that? Oh god, do that again, yes, right there, please! Fuck! I love it, I love you, so damn good. Suck it...oh fuck, you found my clit. Yes, suck it hard, harder! Oh goddamnit, here I cum, here I fucking cum!"

Your deliberate attention to her sensitive nub works like magic and her cries of ecstasy rebound off the walls of the alleyway in waves of pure bliss. Her fingers bear down in your hair, pulling so hard it hurts a bit, but you continue your **** on her honey hole until the last of her girl cum has been cleaned up by your very thorough and probing tongue. You look up at her from between her velvety thighs and her beautiful face is staring back at you, momentarily satiated by your oral endeavors.

Grinning like a fool, you stand back up and lower your hands to your pants where you fumble a moment with the zipper, fully intent on having Shelly return the favor. But she places her hands atop yours and gives a little pout, one she's perfected ever since she was a little girl, and gives a slight shake of her head. "I'm sorry, big brother, but we're already running late for the movie and if we don't go now, we're going to miss it." With a sexy little wiggle, she pulls her dress back to its--almost--appropriate position and slides away from the wall.

"Who the fuck cares about the movie!?" you manage to squeak out, the insane case of blue balls you're experiencing somehow affecting the vocal cords in your throat, making them tight and high pitched. She can't seriously be mean enough to leave you hanging like this all night, can she? She makes it to the entrance of the alleyway and, with a saucy toss of her blonde head, looks back at you over her shoulder, a malicious smile pointed in your direction.

Fuck.

"Are you coming?" she asks sweetly, the double entendre not lost on your sexually frustrated mind, and slips around the corner. Your left with two options: 1) Stay here in this dank alley, by yourself and relieve your problem manually or 2) Follow your sister and die slowly as your body is deprived of blood, since it all seems to have relocated in your crotch since the evening began. You give a little yell of annoyance, slam your fist against the wall and choose the latter option, quickly jogging after Shelly and catching up after half a block. She wraps her hand in yours again and lays her head on your shoulder, obviously pleased with her incessant teasing.

When you arrive at the theater, Shelly walks up to the ticket counter and orders two tickets from a bored looking employee--even a glance at what your sister's wearing doesn't wake him up much. You raise an eyebrow at her selection. It's an independently-made science fiction movie that had been made on a shoestring budget and had gotten pretty horrible reviews. Plus, it had already been in the theaters for over a month. "Really?" you ask.

Shelly shrugs and doesn't reply, bypassing the snacks and drink area, and leading you down the long hallway of theater doorways. Your theater is one of the last ones, the common location for less popular films, and when you push your way through the door, you find a completely empty theater. No one else is there, even though the previews have already begun. Then it clicks in your mind why Shelly chose this particular movie and your brain screams in exultation. Your theory is further confirmed when your sister climbs the stairs to the very back corner, her delectable ass swinging invitingly the entire way, and find two seats in a shrouded niche.

As the previews fade and the opening credits begin to roll, your sister turns her head and pulls you toward her, kissing you again passionately. Your hand drops to her large breasts, squeezing her soft flesh over the top of the thin layer of her dress, feeling the hard points of her nipples as the poke free. She moans into your mouth, overjoyed at finally having you touching her sweet titties, arching her back until your fingers are overflowing. You feel your zipper being slowly lowered, Shelly slight fingers tugging it harder as it gets caught on the thick bulge hiding just below the surface. But just as her hand dips inside to pull you free, you both hear the squeal of the door to the theater opening and closing.

You both freeze, hand on tit and hand on cock, waiting to see who made the noise, ready to return if it was a false alarm. Unfortunately, it's not. Another couple silently walks into the theater, a man and a woman, and your heart pounds faster, waiting for them to look back and catch you and Shelly in the act. But they don't even look around, moving quickly to seats near the front, their heads silhouetted by the flickering screen, and settling in.

For a moment, when the woman turns her head to say something to her partner, you get a flash of recognition but it passes before it can firmly take hold.

You breathe a sigh of relief, ready to cool things off now that there's another couple present, but Shelly has different ideas. Her hand continues its struggle to free your dick from your pants, tugging and pulling until the tip bursts through the opening. She gasps lightly, the sound covered by the movie, and you look down at your erection. It's huge, even bigger than normal. You know it's grown thanks to your dreaming abilities, but the shaft that rises from your crotch is reminiscent of those normally found in pornos and Shelly's hand can barely wrap around the base, leaving almost another full six inches waving in the breeze. But her surprise quickly turns to lust, her libido rising as she imagines just what this cock can do to pleasure her.

With a quick glance at the couple down below, Shelly leans in and whispers breathlessly in your ear, "I've always wanted to do this."

She slides from her chair and positions herself at your feet, the small, cramped space between rows barely enough to fit her. She raises herself up until her juggs, already bursting out the top of her dress, are hovering above your tip. Then, almost as if the dress were specifically designed for this purpose, she slips your dick head through one of the openings in the strings crisscrossing her chest, and slides your cock deep into the cleavage of her breasts. The dress supports her tits enough that she doesn't even need to press them together for your pole to be enveloped in their warm, doughy embrace. Settling down completely, your sister's melons cover about three-quarters of your shaft, your tip jutting up like a spear from her wide valley. Watching your face for your reaction, she dips her chin and sticks out her tongue, licking the exposed portion of your dick like a delicious lollipop.

You almost cum right then, her sapphire eyes drilling into you as she lovingly tastes your precum. Somehow you resist, knowing the best is yet to come. Shelly grabs the sides of her boobs, clamping them even more firmly around your immense rod and jiggles them up and down, titfucking you like a professional slut. The feeling is amazingly intense, explosions of pleasure zipping through your core.

But Shelly proves that her skills and teasing ability are no fluke. As she feels you getting close to orgasming, she slows down and gives soft licks to your dick, letting your desires fade until she can start bouncing again. She works your dick with her big, soft boobies like an expert, in control the whole time and never breaking her gaze away from your face.

It's during one of her slow downs that you realize that you can only see one head from the other couple in front of you, the man's. But before you have more than a moment to consider where the girl might have gone, Shelly picks up the pace and you give yourself over to her double-breasted administrations.

Finally...finally, after what seems like an eternity of tit-driven ecstasy, you're unable to hold back any longer. Your first shot of jizz rockets from your dick so fast that you barely see it blur past Shelly's ear, on its way to landing three rows in front of you. Your sister quickly responds, slamming her face forward and wrapping her lips in a perfect seal around your cock as the flood is released. Again, she shows her talents, her throat working overtime to inhale your seed without missing a beat. You briefly wonder how many boys she had to practice on before she got this good, but you push the thought away and simply enjoy the experience of filling your sister's mouth with your cum.

After the last remnants have made their way to her belly, Shelly pulls her mouth free, a look of pride beaming from her face at her accomplishment. She tries to slither your cock free of her tits but in its softening state it gets entangled in the strings of her dress, and she has to carefully guide it through the holes. She readjusts her top, hiding her prominent nipple and restoring her to some semblance of modesty.

When she regains her seat, she leans over and asks, "Was it worth the wait?" Nodding dumbly, you stuff yourself back into your pants and rezip them. She moves even closer until your arm is almost entrapped in her cleavage like your cock just had been. "Good. Because now I want you to take me home and fuck me."

The invitation is too good to pass up and you both rise with an eagerness that makes you a little dizzy. You climb down the stairs with care, the movie covering any noise you make. When you get close to the bottom, you glance over at the man who'd entered late but he doesn't even turn his head as you and your sister pass. The reason is apparent. He has his eyes closed, head laid back, and the girl you'd thought had gone missing was bent almost in half, her head bobbing furiously in his lap. Apparently we weren't the only ones with this idea, you think before your sister drag you out of the theater, leaving the other couple to their fun.

It's not until you're almost back to your care, arm in arm with your beautiful sister that the full recognition of what you just witness hits you. You did recognize the girl...and her partner.

The girl giving the blowjob was your neighbor, Penny.

The man was her creepy father.