Mario knew they couldn't keep the piglets, but let them nurse on Princess Sowra until they were old enough, and sold them to a farmer in a nearby county.
Sow seemed depressed after they were gone, so Adam would transport her to a gay bar whenever he was gone, so that she could console her 2000 pound self by sucking cocks and balls, and generally pleasing hot men.
She had quite the following, and nobody was a better cocksucker than Princess the amazing Obese Sow! She sucked the cum out of men, each suck adding to her already ample weight. Men who wanted to gain weight nursed on her 16 nipples - there were always 16 scrawny guys nursing on her. But they didn't stay scrawny for long - most of them left the bar with beer guts hanging down over their belts, or other variations on the general pear shape. Some of them even got immobile. Chubby chasers and wanna-be chubs started coming from all over the world to see her or her work, and started paying good money or in food so Princess Pork Chop could keep her huge squishy figure. Twinks barely 100 pounds left the bar naked and fat on leashes, proudly owned by chasers. Princess became famous and was loved for her blubber power.
Eventually the it was that time of year for the Folsom Street fair once again. Princess SowCunt was so well known in the gay world now, it was expected she would attend. Mario assured everyone she would be there in true fat form.
On the day of the fair, Adam - not fat sow Adam - but actual fit jock Adam from before all of Mario's magic and prompting - walked out into the center of the most busy intersection of the fair. Mario stood next to him and said, "I promised you Princess Pigs-a-lot would be here today, and here she is!" With great flourish, Mario pointed to Adam.
Some people laughed, saying Adam was no sow, others cheered for the hot jock and were ready to see some action with him. Adam cleared his throat into a mic, then spoke in his old jock voice from before he'd gone whole hog, so everyone could hear. "I'm Adam Smithson, but most of you know me as Princess, the obese wonder-sow."
"You're no sow - go back to the gym, jock!" Someone yelled from the crowd, and threw a pink dildo at him.
Adam caught it, and suckled on it like it was his favorite pacifier. People laughed, then he continued. "I know I don't look very big, but that's because I need to suck cocks to transform me - real cocks." Adam stripped his tank off and his shorts, standing naked, his large cock and balls soft and dripping precum.
"It's true," Mario said, flexing his muscles and doing a little show-boating himself. He ran a muscular hand through his long dark mane, and the guys into that sort of thing got their phones out to save his image for all posterity. Then, he slipped off the one thing he was wearing, a banana hammock. His large cock stuck out pointing right at Adam. "Watch what happens when Adam suck's a real man's cock!"
With that, Adam dropped to his knees before Mario, who was his ideal man now and would make him hard if it was possible. Instead his cock just leaked precum like a water fountain. He buried his face in Mario's crotch, moaning in ecstacy. He sucked on Mario's big, hairy balls, enjoying the weight and bulk of them filling his mouth. It always felt so amazing sucking on Master Mario!
Finally, after sucking and tenderly kissing his Master's balls, Adam kissed the tip of Mario's cock, then started licking it delicately, then finally took the head into his mouth with a grunt. He started going up and down on Mario's shaft, then took it all the way in, his chin pressed firmly against Mario's balls. Mario groaned and started bucking as Adam sucked him. Then as Mario started to seriously precum, the changes started.
There must have been over 100 phones out snapping pictures and recording Adam sucking on his Master's cock from all angles. Now, if any of them strayed onto Gay porn sites, they could see the Adam they knew, naked and sucking cock like there was no tomorrow, as he slowly started gaining weight right in front of the crowd. First it was a bit of a gut and moobs. Then it expanded even more, and even faster. By the time Mario cried out, cumming down Adam's piggy throat, the sowboi had grown a snout, tail, hooves, and big fat teats, gut, ass and love handles were rolling out all over him. Until there she was, Princess Sow-Ra, sitting on her obese ass in the middle of the Folsom Street Fair, sucking Mario's big hard cock and gazing up into her Master's hot smiling face. Her belly covered what everyone saw shrink and invert into a very wet pussy (right before her ass widened to super-chub size and her belly inflated out to her knees).
Then the tats slowly appeared, like skin-polaroids, course dark hair growing all over her body (except where it fell out - everywhere on her head except her chins, her armpits baby smooth, and her gunt sow-soft). Adam squealed dumbly, having cleand Mario's cock, she just sat there with a dumb look on her face, her tongue poking out giving her a perpetually retarded look of surprise, drool strung from her lower lip. No one remembered the big septum ring, earrings, or nipple rings being on her when she was human, or noticed exactly when they had appeared, but they definitely completed the image of this dumb brutish animal.
There was a large farting sound, and with several pops, 16 piglets emerged from Princess' backside, and climbed to her 16 big fat lactating nipples and started nursing, even as Princess started nursing on a hot muscle man's cock.
"Lets hear it for Princess the world's fattest, dumbest, most prize-winning sow!" Mario declared, and everyone clapped, because she truly lived up to her name.
"Wreee." Drool. Slurp.