Shopping Day

Derpy always enjoyed having breakfast on the back porch, because it encouraged Berry and her to sit on the bench for a little longer once their daughters had finished eating and went to play in the yard. Doing the dishes could wait, then. In the privacy of their own home, Berry Punch was quite affectionate, so she enjoyed Derpy leaning against her. The bigger mare had her arm over Derpy's shoulders.

Even Derpy's breasts, each now slightly larger than her own head, didn't interrupt these moments of togetherness by demanding attention. The feeling of constant production was a pleasant background thrum, subtle but reassuring. Besides, a nice glass of her milk was part of every breakfast. She idly rubbed the side of her rack for a moment. "I'm happy, Berry." It might be a trite thing to say, but she liked to be explicit about how much she enjoyed the life they had built. Now that she was working as a mailmare, most mornings were spent in something of a hurry.

"Yeah," Berry nodded. "Feel like a winner every day." The big mare had a few customers for the products of her still, but otherwise stayed at home to look after the kids. Before settling down in Ponyville, Berry hadn't had a welcoming home or a supportive family at any point, so she was savoring things many ponies took for granted. "If I got stabbed today I'd say things ended on real high note."

Derpy rolled her eyes, pinching the top of her muzzle. "Couldn't you say something mushy like 'I wanna grow old with you'?"

"That would work," Berry agreed amicably. She grabbed a pitcher from the table, brought it to the nearer of Derpy's fat nipples and gently gave it a tug.

The flow of milk was nice and controlled. Derpy had let off steam in the shower earlier, and besides, actually giving milk for a meal was enjoyably satisfying, but didn't make her normal arousal spike any higher than the usual low simmer. Intellectually, she knew that they might pour out the pitcher's remaining contents later since her family probably didn't consume particularly more milk than others, but the demonstrable truth that her supply far outstripped her family's modest demands only made the situation sweeter.

Berry gave her boob a fond pat. "I'll grow old with you, sure. D'ya think your jugs will let you get all saggy and dried up?" She smirked. "Always more mouths to feed in the world. Grandchildren, maybe?"

Derpy grinned. Soothing warmth radiated from her great glands, as though they approved of the idea of existing forever to supply milk to the hungry. "Where'd that come from? Run out of ideas for teasing me about wanting to be huge, so now I'm gonna be the immortal princess of boobs?"

Slowly pouring herself a glass of milk, Berry took her time to answer. "Nah, the size stuff is still fun, it's not like it stops working on you. But you'd need a lot of time to get really huge. I've been browsing the fiction stuff at the library to help me come up with stuff."

"Stuff?"

"Well." Berry took a sip. "I already doubt the princess would be happy with a pair of tits the size of mountains within sight of Canterlot. Maybe you could relocate to the frozen wastes or the badlands, since you'd be more useful there anyway, but that's really just kicking the problem down the road for a while, and supposedly the princess wouldn't be so shortsighted." She shrugged. "Anyway, nobody wants to see you flatten cities or displace so much water it floods the coastlines so once you're too big for a cloud platform we'd have to get weird."

"Well, yeah. I obviously wouldn't expect to get that absurdly huge within my lifetime." And yet ... even imagining herself bigger than the mountains, so huge that even from outside Equestria she'd eventually encroach on it, that didn't feel too big. Derpy's mouth went dry as she asked herself if it felt big enough, a final goal to dream about achieving.

No.

"Weird, huh?"

"Y'know." Berry gestured vaguely. "Send you to space and and build the first off-world colony on your knockers, maybe find some alternate world or timeline nobody uses anymore, that kinda stuff. Get the world out of the way of your rack, yeah?"

"Yeah." Derpy swallowed thickly. While logistical problems were easily ignored in lewd fantasies and she generally got a kick out of being inconvenient for others, Derpy didn't want to hurt anyone or cause too much destruction, which had put something of a cap on how vast she could envision herself and enjoy it. She took a deep, deliberate breath and massaged the sides of her amazing breasts slowly to remain calm. Fortunately, it had barely been an hour since her morning shower and its associated milk release and awesome boobgasm, which helped in maintaining control.

She was usefully distracted by a shriek of delight as their daughters started roughhousing in the grass. The girls were surprisingly physically inclined for a pair of unicorns, but perhaps Derpy was harboring a stereotype. It probably mattered more that Berry was an imposing, physically powerful mare, and that she'd started first tickle-fighting and then play-wrestling with the girls as soon as they could walk with a degree of confidence.

Derpy got up to start cleaning up the remains of breakfast, enjoying the increasingly weighty bounce and wobble of her breasts. Maybe one day she'd be much too large for mundane tasks like that, but right now she simply enjoyed the way her rack already demanded slight adjustments to the way she moved while doing household chores. She bit her lip. First the rest of the world had to adjust around her boobs, and perhaps in the far future, the world would get out of the way, as Berry had put it. That was only right.

"I'll just put the dishes in the sink," she called out to Berry. Cleaning them could wait. Once their daughters had exhausted themselves, it would be time to cuddle. The girls already understood that Derpy wasn't quite like other ponies, but they mostly enjoyed how soft and comfortable her body could be. They were going to have to go grocery shopping as well, but since Derpy's appreciation for crowds grew along with her boobs, she wasn't in any particular hurry to do it outside of any sort of peak hour.

Getting the girls ready for a shopping trip wasn't much of a hassle considering the good weather they'd been having. By the time it got colder, the two of them would probably have the hang of dressing themselves without assistance.

"Get dressed, mommy!" Dinky and Ruby Pinch both giggled. Currently they were finding it very amusing to remind Derpy not to go topless outside their home. Perhaps they had a childish awareness of the fact that Derpy liked being looked at, which made it funny?

"I'll need some help with that," Derpy replied warmly. "Berry, you about ready?"

"Yeah." The bigger mare approached from the kitchen. "Packed some juice in case the kids get thirsty." Berry sometimes claimed to be particularly meticulous about details like that because she lacked any natural inclination towards care-giving.

Derpy was finding that notion increasingly questionable as the years went on. "Good thinking." She held out the top she'd selected for the day, then put it on until the fabric was bunched up on top of her boobs "I'll need some help with that."

Berry just rolled her eyes. She was obviously well aware that Derpy's rack wasn't nearly big enough to keep her from dressing herself. The problem was that the cow print tank top was the last doomed survivor of a generation of garments which had long grown incapable of containing Derpy and been subsequently discarded in tatters. It wouldn't be the first time that she had to leverage her considerable strength to help Derpy squash her tits into some poor, abused garment. Having her boobs treated so roughly by her lover was normally enough to get Derpy horny, which then might have been enough for her milk tanks to grow tight and engorged, sabotaging their efforts.

Derpy assumed that her breasts simply didn’t want to be left out of the fun whenever that happened. While the milk she disgorged during a proper boobgasm was far beyond anything another mare could dream of, it was a pittance next to Derpy’s actual capabilities, so there could hardly be any point to it but pleasure.

Fortunately, the knowledge that her family certainly did not need a demonstration of what Derpy’s rack was capable of and that the bigger mare was nearly impossible to fluster through lewd displays alone had made it easier than usual for Derpy to keep her cool. Besides, Derpy intended to grow larger. Her boobs would get in the way a lot more in coming years. It was obviously a practical necessity that their daughters grew up regarding it as normal to touch Derpy's breasts for purely pragmatic reasons. That wouldn't work if they assumed that any touch would drive Derpy wild. It would be far too awkward and uncomfortable.

Berry stepped up and with a few deft, practiced motions stuffed Derpy's tits into the top. Her large nipples required particular effort, to Derpy's delight. Berry snorted in pretended exasperation. "Y'know, this is just another one of your jugs' nonsense powers, yeah?"

"Hm?" Just because the presence of her family made it easier to keep her cool while being roughly handled didn't make it precisely trivial. She felt the heat mounting. Fortunately, as her breasts had grown to provide ever more pleasure, Derpy had become more accustomed to functioning normally at higher levels of arousal. The heights were higher, but the way there could be enjoyed covertly, for the most part.

"That it didn't hurt or make you uncomfortable." Berry gestured at Derpy's rack and the top barely containing it.

She was bulging out obscenely at the top, bottom and even the sides by her arms. The garment entirely failed to hide her plump nipples and her broad, pebbly aureola. Derpy experienced a giddy kind of anticipation at the thought of bursting out of its feeble grasp eventually. Her plenitude could only be held back as long as she allowed it. Of course they didn't hurt. Her breasts were something beyond normal pony understanding, miracles of fertility which preceded her wherever she went. It would take a lot more than an undersized top to make them hurt. She gave them a little bounce. Seams creaked in warning, to her distinct pleasure.

Derpy made a deliberate effort not to think further along those lines. "Pain really isn't the pressing problem when you treat 'em like that." She smiled. "Anyway, let's go, everyone."