Sex on the Beach

Derpy had always had a penis, at least as far back as she could remember. According to the doctors she had seen it was likely caused by some kind of magical imbalance in her mother before she had been born. It had been significantly more discreet when she was younger, though. It was small enough that she could get away with not using enchanted underwear to hide it. It wasn't until middle school that the onset of puberty made the enchantment a necessity, if only because the thing started growing bigger and bigger until it was the size of her forearm when soft. Celestia forbid she get an erection while at school, or even the baggiest clothing she had wouldn't be able to conceal the monstrosity. Magical enchantments on her clothing helped keep it a secret, as did negotiating with the administration to get her out of gym, which was where she met Carrot Top.

Carrot Top, according to her mother, had glandular issues that made her get exhausted incredibly easily, which was enough to get her out of physical activity and in study hall with Derpy. The two had hit it off immediately and had been best friends ever since. “Although,” Derpy mused, staring at the reflection of her gigantic member in the mirror, “I never did work up the courage to tell her about this.” Her cock, by now fully hard and leaking copious amounts of pre, was like a third leg jutting out of her torso. She had a sizable pair of balls, though her doctor told her that the semen they produced (and they produced quite a bit) didn't contain any sperm so there wasn't any worry of her ever getting anypony pregnant. The base of her cock was a dark grey-purple; around her medial ring, heart-shaped splotches of pink began to appear, and the upper half of her cock was entirely pink. Derpy didn't know much about the average size of penises, but she knew hers was significantly bigger than Dinky's father's. He was the only stallion she had ever slept with. It hadn't gone well, but Derpy took solace in the fact that he had at least been willing to try.

Not more than once, and he had never spoken to her again, but he had promised to keep it a secret and as far as Derpy knew, he had kept his word. After that she had given up on romance altogether. Raising Dinky and finding a source of income was more important than getting into the dating scene. Carrot Top helped in her own way by inviting Derpy in as her housemate – she had originally offered it free of charge, but Derpy insisted that wouldn't be fair, eventually finding work as a mailmare. Between their two paychecks, they managed to make a comfortable living for the three of them.

Derpy's member twitched slightly, as though protesting being ignored in favour of reminiscing about the past. “Right. Better just get this over with now.” She grasped the base of her shaft with her left hand, debating how to go about this. Most ponies don't spend time thinking about the logistics of masturbating in the shower, but most ponies don't have two and a half foot long cocks that come literal buckets. The first step, though, was to get into the shower. The water would hopefully expedite the cleaning process, as Derpy doubted she had the time to thoroughly clean up after herself, and really didn't want to risk Dinky stumbling into a cum-soaked bathroom and asking awkward questions, or Carrot Top beating her to it when they got back and discovering her secret.

Or, Celestia forbid, both.

Not wanting to waste more time, Derpy stepped into the shower, taking a brief moment to relax before grasping her shaft with her other hand. She turned her body to face the water, allowing the shower to gently massage her cock as she began to slowly and gently stroke it. Gently, she lowered her body and carefully took a seat on the shower floor, leaning back and letting her mind slip once more into fantasy.

Carrot Top stares with shock at her friend's mighty member. “Sweet Luna's ass, Derpy, that thing's fucking enormous! There's no fucking way I'm gonna fit that thing inside me!”

Derpy is taken aback by Top's words. “Oh. Um...”

“I mean, look at it! It's bigger than my freaking torso! Shit, it's bigger than YOUR freaking torso!” she punctuates this statement by giving the thing a good shove, causing the head to hit Derpy square in the nose.

“Ow!” Derpy let go of her cock to rub her nose. That fantasy had been a bit too real for comfort. She gave the thing a good stern glare. “Come on, this is my fantasy, I should at least get to have sex with the gorgeous mare.” Her penis twitched, and Derpy stared at it. The imaginary Carrot Top was right, though. It reached almost eye level. Derpy had never really thought of that before.

She paused in her stroking.

And then she gave the tip of her member a slight lick.

Derpy had an idea. It was probably a terrible idea, but damned if she wouldn't try anything at least once. She closed her eyes, moved her head forward slightly, and began to fantasize once more;

Carrot Top stares with awe at her friend's mighty member, jaw hanging slightly agape. “Sweet Luna's ass, Derpy, that thing's fucking enormous! There's no fucking way I'm gonna fit that thing inside me!” Her voice this time around is husky with arousal, and she punctuates her statement with a sensual lick of her lips. - Yes, Derpy decided, this was going much better. She took a tentative breath, inhaling her own musk “Wow... I smell good...” She gave her cock's wide, flat head another tentative lick. “Fuck it, at least there'll be less cleanup.” Derpy dove right in.

And so does the imaginary Carrot Top, roughly shoving Derpy onto her plush rear before kneeling in front of her, eyes still fixated on the immense, throbbing organ before her with an intensity that almost scares Derpy. “Uh, Top? What are you-”

“Well, like I said, there's no way I'm fitting that thing inside me without tearing something. But I am absolutely NOT gonna let that magnificent cock go to waste.” She leans forward and lightly grabs Derpy's hefty balls. “Geeze, what did they feed you? These things are the size of fucking grapefruits.” She punctuates this by giving them a good, solid squeeze that makes Derpy wince. Carrot Top licks her lips once more. “So if I ain't gonna get to fuck ya' proper, I might as well at least give you the titjob of a goddamn lifetime.” Carrot Top leans in closer, slowly crawling forward and forcing Derpy almost onto her back. She licks her lips before gingerly doing the same to Derpy's cock. “You taste goooooood,” she says huskily, the sentence devolving into a sensual moan. She licks Derpy's cock again, starting at the top and working her way down to the base. She attempts to take one of her friend's balls into her mouth, only managing a fraction of it. Still, she gives it a good suck before moving to the other one and giving it some attention. She shoves her face under Derpy's sack, inhaling deeply before giving her clit a light kiss and then reversing her journey. “And you smell great too. I think I could come just from this. You ever thought'a selling your sweat as an aphrodesiac?” She doesn't give Derpy a chance to reply, licking her way up the veiny shaft before pausing again at the medial ring. She turns her head sideways and wraps her lips around as much of Derpy's length as she can, gently sucking and nibbling. The attention causes Derpy to buck her hips slightly. Carrot Top immediately pauses, glancing sternly up at her friend. “Oi, hold it in a little longer, we're just getting to the best part!”

Derpy nods absentmindedly, her breaths rapid, shallow, and laboured. “Don't stop,” she mutters over and over, more to herself than to Carrot Top.

The orange mare grins widely before returning to her work. “Don't worry, hon, we're almost there.” She resumes licking at Derpy's medial ring before resuming her upwards motion. As she reaches the top, she gives Derpy's head a light kiss before pressing her body into Derpy's. “Heh. You're big enough we're face to face. Lucky break, huh?” Derpy can only respond with a mindless groan as Carrot Top's massive tits press into her own, more modest pair, enveloping the top half of her glorious shaft. Now the fun really begins.” There were no more words. Derpy reached around behind Top's neck, pulling her friend into a passionate kiss as Carrot Top's own hands occupied themselves with pressing her tits together. They form a tunnel, warm and soft and tight, all at the same time. Derpy finds herself already thrusting lightly, her hips pumping themselves of their own volition. She feels a tightening sensation deep in the pit of her stomach, and a vague tingling sensation moving throughout her cock.

And then Carrot Top begins to move her breasts. Slowly at first, but very quickly picking up speed. Derpy breaks the kiss with a wild scream. Her tongue hangs out of her mouth and her eyes roll up into her head, though in slightly different directions. Her wings, already stiff as boards, begin flailing around wildly, sending water everywhere outside of the fantasy. Carrot Top takes advantage of the kiss being broken to turn her attention elsewhere. Continuing to pump her breasts up and down with a steady, forceful rhythm, she wraps her mouth around the head of Derpy's cock, sucking up the fluids her friend had been copiously leaking already. Derpy is humping furiously at this point; if Carrot Top wanted to, she could let the pegasus do all of the work. Her own hips slowly thrust into midair, and instead she redoubles her efforts, pushing her hands even harder into her breasts. Somewhere in the back of her mind, Derpy feels a moistness on her chest, though whether its source is Carrot Top's milk or the shower outside of the fantasy. Carrot Top doesn't seem to care, instead sucking on Derpy's cock even harder. The tightening in Derpy's stomach extends to her balls, and the warmth in her cock turns into a raging fire.

Carrot Top sticks her tongue into Derpy's urethra, and the pegasus is finally pushed over the edge. Her cock pulses once, and then again, and then Derpy's left eye shot open as she came into her own mouth.

Her orgasm felt like she had shoved a fire hydrant into her mouth. Instead of coming in spurts it was a steady, powerful flow that quickly became far more than she could handle. Her cheeks puffed up as semen spurted out of her mouth and began to leak out of her nose. She tried her very best to swallow it, but it was too much and eventually she had no choice but to spit her cock out, coughing up semen. Her orgasm continued on for what seemed like an eternity. Eventually, the steady flow turned into a few weak spurts, and then nothing. Derpy collapsed backwards, letting the shower caress her as she basked in the afterglow. Her breathing was deep and relaxed as she surveyed her surroundings.

The walls around her were coated with streaks of semen, as was the cutrain. Some was being washed away by the shower, but most stubbornly clinged on. The ceiling didn't even have that slight advantage, long streaks sticking stubbornly overhead. Her own nose was still leaking small amounts, and much of her face and torso was coated either by what leakage she couldn't contain when still attempting autofellatio or the aftermath of giving up on even trying to swallow her own load. Her genitals themselves were an absolute mess of clear, sticky fluid, completely coated from top to balls.

“Yeah, right. Less cleanup my ass.”