Cloppy bits and pieces

"So was it always there or did it just pop out when you became a Princess?"

Twilight yelped, feeling a small hoof poking at her slowly-hardening length that was gradually extending down towards the floor.

"Sweetie Belle! Do you mind?"

Sweetie looked up at her, grinning.

"Nope, it's kinda cool actually! Wish I had one."

Twilight sighed. Her length was pretty much at full hardness but still growing, the wide head pressed firmly against the library floor and leaving a smear of pre as it began to make its own room, pushing forward between her forelegs. Sweetie Belle followed it with her eyes, her expression of surprise growing along with it. It wasn't long before her balls got in on the act, stretching and drooping as they expanded like balloons attached to a hose, filling up with pints of jizz and reaching down past her knees, causing her to widen her stance to give them more room which they happily used up.

"That's not what I meant, Sweetie Belle. Poking the privates of other ponies isn't the done thing. Darn, now it won't go down until I jer- uh, until I... wait for a while."

Looking down, she could see the head, now wider than her neck, sticking out between her hooves, and could feel her balls pushing firmly against the insides of her lower legs. Fuck, she needed to cum.

"Gee Twilight, you're really swelling up. Are you allergic to me?"

Twilight almost managed a laugh, but shivered as she reflexively thrust forward a little, the underside of her cock head rubbing against wood.

"And these look a little swollen, might want to get 'em checked out."

She prodded one of the now volleyball-sized testicles firmly.

"Nuh-ungh!"

Twilight choked, her words sticking in her throat as Sweetie Belle's touch caused her balls to seize up. Her three-foot length lurched, and a fat rope of cum spurted out, splattering against a shelf full of books. She hadn't quite cum, but came damn close.

"D-Dammit, Sweetie, stop that!"

Sweetie just giggled, and trotted round in front of Twilight.

"Jeez, Twi, no need to be such a prude! I heard you were but this is just silly."

Twilight blinked.

"Wha?"

"Oh yeah, Rarity's always going on about how embarrassed you get when you talk about sex n' stuff."

Twilight grit her teeth and exhaled, trying hard not to get too excited and bowl Sweetie over with a jizz upper cut from her huge flare - that was now barely a foot from the filly's face.

"Guh. I'm not embarrassed, it's just hard when you haven't had some thing like... this for very long, just takes a bit of getting used toooooo"

Sweetie had pushed her face into Twilight's slit and stuck her tongue as far down as it would go. Twilight was practically convulsing, a series of near-orgasms sending mouthfuls of spunk into Sweetie's waiting maw. She promptly withdrew her tongue, and licked her lips.

"I know you wanna cum, Twilight. Stop holding back."

Twilight sighed. Dammit, she did. She sat down, legs spread wide to make room for her balls, and steadily held her length out, its sheer weight pulling it down until it was almost horizontal.

"I can't believe a filly is the one calling the shots here. Fine, I will, but only because these are starting to get a bit too full for my liking."

She laid a hoof on each testicle, the gentle, rhythmic pulsing almost therapeutic.

"Just... Don't poke me any more, okay?"

"Alrighty!"

Sweetie sat back as well, holding the foot-across head in her hooves. She applied some pressure, eliciting a groan from Twilight who was now resting against the wall behind her.

"Heh. You really do need this, don't ya?"

"Mhmm"

Her lips made contact with the tip once more, and she ran her tongue along the slit, causing the entire length to lurch as Twilight moaned lewdly. Her balls surged, billowing upward onto the tops of her legs. She was close.

Sweetie kept licking away at the melon-sized head like an ice cream, slowly applying more pressure to it. By now Twilight's tongue was hanging out of her mouth, her chest rising and falling.

"Hng...gah.. Sweetie Belle, I'm gonna... I'm gonna-"

Hearing an ominous rumbling, Sweetie drew her head back, shifted to the side and wrapped her forelegs around the thick shaft just behind the head, giving one last squeeze.

With a guttural cry, Twilight let go.

Her enormous dick shuddered, then erupted, a thick, white geyser exploding outward and splattering noisily against the bookshelves fifteen feet in front of her. The pleasure was so immense that she could barely move, frozen stiff as the mind-numbing sensations washed over her, gallons of spooge spurting out and up, drenching the wall in layers of sticky, hot jism.

Sweetie Belle could only look on as Twilight continued to cry out, her enormous cum-laden balls convulsing and quivering, working as hard as they could to empty every last ounce from their seemingly bottomless depths and sending each over-sized blast of their immense load rocketing out to douse the books ahead, knocking some from the shelves and landing in the growing lake of murky white on the floor below.

Near-hyperventilating, Twilight's heart rate gradually began to slow as the last few ropes, less powerful but still many times larger than the average orgasm, sputtered out and coated the floor in front of her throbbing flare. She let her head fall back as her engorged shaft began to flag, settling against the floor with a quiet thwump.

Sweetie Belle sat down beside Twilight, patting the base of the huge purple length beside her.

"Feeling better?"

Twilight, breathless, managed a 'yep'.

"Good, 'cus we're totally doing this again some time."