You and Mom run into a healthy enemy and a pervy new friend

"No, Mom," you sigh, crossing your arms. "Dessert is fine. What you really need to look out for are bad fats."

"...Doesn't dessert have lots of fat?" Your mother is standing at the edge of the bakery department, staring down a display full of brownies, cupcakes, and other delicious clumps of sugar.

"That doesn't make any sense," you reply, picking up a few boxes and dumping them into her shopping cart. "Desserts don't really have fat, because they aren't made from animals."

"Oh. Then how do I know when stuff has bad fats?"

"It's right in the name: bad. Anything with bad fats in it will taste bad. If it tastes good, it's probably fine."

"That's... Are you sure? I feel like I've been eating lots of stuff that tastes good, and I'm..." She looks down at her stomach, which is straining against her old, formerly-modest dress so hard that her belly button is clearly visible.

"Well, not everything's, uh... Dieting is kinda complicated. Don't worry, you'll get the hang of it eventually."

"Thanks, sweetie," she says with a smile. "So... Dessert is good! That's good. I like dessert." Nodding happily to herself, she grabs a few more boxes and adds them to the cart.

Just then a woman catches sight of your mother, and quickly walks over. "Jenna? Is that--" Her smile falters as she gets a better look at Mom's body. "Um, hi! You look... It's good to see you! You remember me, right? Sarah, from KPL?"

"Of course! Oh my--This is perfect!" Your mother glances over at you. "Sarah's a total fitness nut. She can help us with my new diet!"

"Oooh... Greeeat," you reply, forcing a smile... And stepping in front of the shopping cart. If she sees what we're buying, the jig is up.

"You remember my son, Marcus? He was just telling me about bad fats."

"Aw, it's so nice of you to help your mother with her--" She takes another look at Mom's recently-inflated body. "...With losing a few pounds. The thing you need to know about fat--"

"We already covered that," you interrupt, not wanting her to blow the whistle on just how terrible your nutrition advice is. "But I don't know much about... Uh... Which vegetables are good."

"Oh? Well, you can't go too wrong with veggies," Sarah continues, oblivious to your clumsy misdirection. Maybe she's not getting enough cum either, huh? She's sharper than Mom, but not by much. "Still, there are a few things you should know. I'm sure you've heard about 'superfoods,' and it's kinda a buzzword, but there's some--"

"Uh, Sarah," you cut in again, dropping your fly. "Sorry, but do you mind if I work up a load while you tell us? Mom needs a dose."

"Oh... Oh dear... Mhm," she mutters awkwardly, half-turning away so that she doesn't have to watch as you bend your mother over the display.

Mom is confused for a second, before she realizes what you're doing and sighs.

"Really? My... My butt? In front of Sarah?"

"Need some variety," you mutter back. And I need to distract you, so that this meddling bitch's lesson doesn't sink in TOO much. Lifting her dress, you spit on your growing erection and get to work.

"...So, um... Y'know, Brussels sprouts used to be bitter, like when we were growing up, but have you--"

"Ah! Marcus, slow down!"

"--H-have you tried them lately? They changed the way they breed it, or something, and... And..."

It's difficult to talk about the ins-and-outs of cooking with vegetables when you're watching an old friend get buttfucked by her own son, but Sarah is certainly making an effort. You manage to outlast her, though: long before you're ready to blow a load up Mom's ass, she makes an excuse and rushes off.

"That was... Ugh... N-nice, seeing Sarah--Ooh..."

Grabbing her huge cheeks, you redouble your efforts. "Guuuh... Fuck, Mom, your fat ass feels so good..."

"C-can you stop calling me f-fat?" Your mother's arms scrabble for purchase on the display, knocking a box of muffins to the floor.

"We've been over this," you grunt back. "Motivation... Mmgh..."

"Right... Okay."

"Yeah... That's it..." Your hips are slamming against her at a ridiculous rate, filling the store with the SLAP-SLAP-SLAP of frantic buttfucking. "I'm gonna nut in your big, giant, fuckable--Uuungh!"

As you throw your head back and begin filling your mother's bowels with jizz, you spot a young couple browsing some baked goods nearby.

The man has clearly been staring at your incestual anal session--And as you loudly bust your nut, the woman looks over as well. Then she notices her boyfriend watching, and slaps him on the arm.

"David," she hisses. "Look away."

"Wha? Uh... Babe, it's totally normal," the man replies defensively. "He's just helping her--"

"He just came in her ass." She crosses her arms, scowling at her boyfriend. "Pervert."

"Him, or me?"

"Both, you dick! Men like that are what turned a medicla issue into a social--You're still staring!"

Sure enough, the man is still watching intently as you pull out of Mom, tug down her dress, and use it to wipe your cock clean... But not clean enough for your liking.

"Kneel," you command, pushing your personal BBW bimbo onto the floor and shoving your cock into her mouth. She moans something in protest, but it quickly turns more pleasant as she begins licking the leftover cum from your rod.

Meanwhile, the couple is still bickering: the woman occasionally swats at her boyfriend, but he only spares her the odd glance as he continues to enjoy the show you're putting on.

"You're right... Public sex should be about medicine," he concedes, rubbing the bulge in his pants. "Speaking of which, uh..."

"Huh? No--No. Not a chance."

"C'mon, babe. I've got a load worked up," he c,ontinues, unzipping his fly. "Just a quick BJ."

"I'll... I'll blow you in the car," the girl replies, her anger quickly deflating as she's **** to say something so degrading and submissive in the middle of an argument.

"I won't be horny then. You know how it is... Boners have a short window of opportunity, then poof."

It seems like a pretty transparent lie to you, but apparently the girl really does need a dose: she buys it immediately, sighing and carefully getting down on the floor. She even pulls a small rectangular cushion out of her purse, tucking it under her knees.

Now that both the girlfriend and your mother are lowered and occupied, you finally make eye contact with the other young man. You give him a grin, and he winks back before continuing to oggle your mother's backside.

After a moment he speaks, still staring at her behind. "Nice day, huh?"

"Yup. Getting better and better. Out running errands?"

"Uh-huh. You?"

"Teaching my mom about nutrition." You nod your head towards the shopping cart, which is overflowing with unhealthy garbage.

"...Damn," the man replies, instantly realizing what you're up to. Then he grabs his girlfriend's head and starts rapidly facefucking her, limiting her ability to eavesdrop--And only drawing out a few dick-muffled complaints before she quiets down and focuses on not gagging.

"Wanna, uh... Hngh... Gimme some tips sometime?"

Your smile grows wider as you realize you're talking to another chubby-chaser... And a wannabe-feeder. "Yeah, man. I've got loads of lifestyle advice for yah."

The two of you exchange contact information over your fucktoys' bobbing heads. The dude's name is Nate, and he's your age--In fact, he and his girlfriend Sandra attend the same college as you and Cassidy.

Before too long he nuts down Sandra's throat, then sheepishly allows her to spit out his cock. She instantly begins pressuring him to leave, humiliated by the encounter.

You and Mom stay behind, loitering in the bakery section for quite a while. You just blew a wad up her ass, so it takes a while before her skilled cock-worshipping gets you ready for another orgasm.

When you finally feel your balls tightening again, you put a hand on her shoulder.

"W-wait--We should save this one for later," you moan, reluctantly shoving her away.

Mom licks her lips, looking up at you with an unreadable expression on her face. "Oh... Okay."

Thinking fast, you grab a weird fancy loaf of bread off the nearby shelf. Ripping it open, you stuff your dick inside and begin filling it with cum.

"Aaah... Fuuuck..." As you groan and squeeze the loaf around your shaft, you reach down and fondle your mother's huge tits. "Alright, we'll... Mgh... Take this home for your dinner."

Stepping close to the shelf, you use your body to obscure Mom's view as you make a quick swap: the bread you just jizzed in ends up back on the shelf, while you toss a clean, un-cumified loaf in your cart.

"C'mon Mom," you sigh contentedly, helping her to her feet. "Let's get your round ass a-rolling."