"So this is the new generation of racers? Not very impressive if you ask me." Rocket Racer scoffed. He seemed to have doubled in size and shape since the last time the public saw him, being the spokesman for Sumo Shakes has definitely taken a toll, but it didn't matter as long as he was still getting custom made cars that allowed him to race at any size.

"Well size doesn't matter if you ask me." Parker Carr remarked. "I've been in the field for years now and have been aiding many new drivers step into the world of racing. Who knows? Maybe one of them can finally beat your record one day."

"Like that's ever gonna happen! Now if you'll excuse me, I've got another commercial to shoot." Getting up, the massive, blubbery man lumbered off. Each step was like a mini earthquake, knocking anyone too close onto their flat behinds. "One perk is I can sit on whoever calls me a sellout." Rocket belched.

Of course one new driver was sure he could bring down such a behemoth in the racing world. He called himself Shadow Z. "Won't he be surprised when he's the one that got sat on!" He chuckled.

A couple new faces were already at the track, Clutch Racington, Max Speed, Chip Howser, Baron Von Rose, Professor Freddy Fusion, Fernando Swerve and Chamford Bricks to name a few. Rocket Racer just smirked as he swayed his thick hips around them, watching as they grew flustered. "Betcha like what you see, huh? There's plenty of Rocket to go around."

Shadow Z just rolled his eyes as the sumo racer waddled by. "Once I become a star I'll be sponsored by someone way cooler than a drink company that makes people fat!" He grumbled. "Heh, I think I know a way to win this easy."

Complimentary Sumo Shakes were being sold at stands around the track, as well as a different brand known as Swinies. "Excuse me, you're Shadow Z, right?" A man asked from behind the Swinies counter.

"Yeah that's me, I take it you're the one responsible for making these pink smoothie drinks?" The racer answered. "Why do you call them Swinies? They look like regular strawberry smoothies to me."

"On the surface, yes. But they have a fattening side effect. Erm, but only if you drink the entire thing at once. If you sip it slowly you should be alright." This intrigued Shadow Z greatly. Without saying another word he bought two Swinies each for everyone, but hid the label.

"Smoothies before your race? Oat milk and fruit does a body good." He smirked. His opponents all rushed over to get their fill. "Oh man, these smell so good. But I don't wanna know what happens to anyone who drinks them."

He took a step back as the other racers started fattening up, their bellies were already as round as the tires on their cars and twice as heavy. Bits of cream and fruit went down their cheeks and chins the more they drank, it was like they were becoming full on slobs, or perhaps something bigger.

Curly pink tails popped out of their massive behinds, twitching as their cheeks jiggled around. Then their ears grew larger and more floppy (although it was hard to tell from their cheeks being so puffy), finally their mouths and noses formed into snouts, oinking with each sip.

"Heh, now winning will be a piece of cake." Shadow Z cackled as he watched the fattening, he didn't want to admit it but it looked hot seeing such round, flabby bodies all bumping against each other in an attempt to waddle around. "Ooh, that one just lost his underwear. I think his name was Fernando? Oh well, now he can partake in some farmer's pig show."

However his actions didn't go unnoticed, Rocket and George H. Plumpwell (the founder of Sumo Shakes in case anyone's forgotten) were rolling the helpless racers to the locker room. "It looks like Jorge Borden is at it again." The latter sighed. "He's my business rival, only his methods of fattening up people are a lot more... Sadistic."

"Whoa, how is that guy not behind bars?" Rocket demanded.

"Beats me, unless he got someone to sell his Swinies in his place. That Shadow Z guy just handed them out, did he even know what he was doing?" Both of them knew the answer to that. The pig men all oinked as they flopped around, trying desperately to get back onto their tiny feet. "Luckily I have a cure for their transformation, although they'll have to lose weight via exercise."

"Okay good, you do that. I think I'll pay a little visit to Mr Z over there." Rocket smirked. Picking up a limited edition Sumo Shake, he waddled right towards the evil racer.

He made sure to stomp extra hard this time, shaking the ground so much cracks started to form on the race track. His giant belly bounced hypnotically the closer he got to the now panicking Shadow Z, it delighted the sumo racer seeing his new rival so shocked. "Heh, you thought you could get away with this?"

"Uh-I. This isn't what it looks like!"

Rocket just gave him a good belly bump, he would have gotten the slim man stuck in his navel if he could, but he had other plans. "Fattening up those other guys wasn't enough, you wanted them to be round, helpless piggies too, huh? Bet you wanted me to be the biggest piggy of all~"

Shadow Z didn't respond, but he did notice the milkshake bottle in his chubby hand. "Uh, you're gonna sit on me, aren't you?"

"Oh believe me, I was planning to do so. The last guy who pissed me off was really deep between my flabby, thick buttcheeks, ooh feeling him squirming around in there gave me shivers. But I don;t want to deprive you of the piggy experience." Rocket smirked, stuffing the shake down his rival's throat.

Shadow Z squirmed as hard as he could, but Rocket kept him pinned down until the last drop was swallowed. He purred as their bellies now pressed against each other, watching as the once slim man was puffing up in a flash. His helmet cracked as his triple chin and puffy cheeks pushed outwards, soft fat oozing from the cracks. His jacket tore up from the seams, but his pants practically exploded off his thunder thighs from how tight they were.

Rocket was enjoying every moment of Shadow Z's fattening, giving his butt a good slap. "Now we'll have a fair race. Aw cheer up, you'll soon see just how lushious all this soft blubber is, you got your own built in air bag."

The now blubbery racer just grumbled away, it didn't stop even as the race finally begun. "Ugh, second place. I would have absolutely won if it wasn't for that meddling sumo!" He grunted, waddling back to his locker room.

Much to his surprise, a much larger racing jacket and a mawashi were placed inside. "Huh? Oh, there's a note here too. 'Sweet Dreams?' That sounds weirdly creepy, oh well. I guess this fat does make a good cushion."

As he waddled off, a shadowy figure giggled to herself and dashed off.