The personality category

Jim stared at his screen. He could do anything he wanted, she wasn't there to stop him, he could even make two changes and get the first one for "free". She would only remember the latter anyways. Then again, changing her personality would alter her perspective on the change too? If he tried to get her to "Like" any changes she received, she would probably know what he did but wouldn't mind? So changing her mind was probably wisest left as the final of the two changes.
He spent almost the entire ride home pondering the best way to proceed. Judgement still clouded by **** and the permanent influence the app had inflicted on him. It wasn't until the bus's penultimate stop that he finally managed to come to a decision.

..I could really go for a blowjob right now. Jim was really getting worked up after having thought about transforming his girlfriend and was rocking a hardon at this very moment. He wasn't in any shape to rock her world as he had last night though, hence why he wanted a simple blowjob.
With this in mind he started filling out the first bracket.

"My partner's lips are too thin. If I could change her lips, I'd make them into designated cocksuckers."

Maybe it was the way he'd phrased it, or just the wicked interpretation of the app but he did NOT get exactly what he had in mind..

Back at home Lisa sat alone watching tv. Some random soap episode of a show she'd never seen. At this point she was just waiting for her boyfriend to get back. She'd been thinking about how hot it'd been when her hair transformed the night before. She wanted more. Maybe she could talk her boyfriend into fixing her figure? Make it look as though she exercised regularly, fix up her nose a little? Perhaps he even held the power to make her even smarter. There were so many possibilities.

Lisa was abruptly thrown out of her daydreaming as a known feeling washed over her. Had he made a change to her without consulting with her first?! THAT ASSHOLE. As the world faded into that familiar blur she felt a strange, new sensation. She could sense a prickling on and around her lips. As her surroundings came back into view she brought up her phone and went to selfie camera. What she was met with made her FURIOUS.

THAT ASSHOLE. WHAT THE FUCK!! How could he change my lips without even asking first. I liked my lips! She could clearly see that her lips were bigger. Much bigger in fact. She went into the bedroom and turned on any light she could find to get a better view of her face's new "addition". In the much better lighting another fact about her lips became immediately evident. There was no way they could be natural. She looked like a slut! And to think the FIRST change he made was this! To turn her into some kind of cock sucking whore??

She made up her mind right then and there. She'd leave the asshole. That should revoke his privileges to the app, right? Maybe she could get by with dick sucking lips like these. Like, plenty of women did, why not her. Maybe she could get a surgeon to shrink them again.
As Lisa tried to gather her thoughts a sudden urge started building within her. It wasn't to her knowledge, but due to how Jim had phrased it "designated dick suckers" he'd not only given her phat lips, but she now also possessed a very real addiction to sucking cock.

Maybe I'll suck his cock, then dump his ass. Her train of thought quickly went from rage towards her boyfriend to fantasies about sucking his cock. Good thing he was well endowed, a good 8 inches to be precise. Dreaming herself away her right hand found its way down and into her panties. Her remaining free hand assisted in her daydreaming as she sat and sucked on her left index finger. After about thirty seconds like this she was rudely disturbed by ..another change. That bastard just gave me cock sucking lips, what else could he want?!? She went through the same routine and when she came out on "the other end" she didn't notice any immediate changes to her body.
Guess that app was a god damn hoax after all. I fucking knew it was a bunch of crap. Shit, I could really go for a good fuck right now, I hope Jim comes home soon so he can rail this little whore. Lisa was completely unaware of her new ..speech restriction, completely incapable of conveying any message without cursing like a sailor.

Moments before Jim had started entering the details of his final change of the day.
I need something that she'd be fine with, or at least something that alters what she considers to be "fine" in the first place. He figured that her personality, a very fundamental part of who she is, would be the best place to go. It should give him what he was looking for. What didn't occur to Jim was how broad of a theme personality really was.

"My partner's personality is too innocent. If I could change her personality, I'd make it more vulgar!"..

Jim stepped through the front door, still with a still very apparent sway to his step. Anyone with half a brain would realize that he'd had a few beers to many tonight. He barely got to removing his shoes before Lisa jumped him. Her hands darted towards his pants as she feverishly got to removing his pants. Lisa practically assaulted her boyfriend's cock as she wrapped her juicy cocksuckers around him. What followed was the sloppiest blowjob she could muster. In her reality she'd always been a total slut for sucking dick. To her this was routine at this point, masterfully playing with Jim's dick. Wrapping her tongue around his member as she took all of his inches into her mouth and down her throat, her gag reflex long gone.

Meanwhile Jim felt like he'd hit the jackpot. He got the blowjob of a lifetime just like that. Definitely a worthwhile change. He looked down at his little cocksucker and met her eyes. Behind her eyes was what could only be described as pure lust. He admired her enthusiasm, not to mention her technique. It felt as though she'd done this her whole life. Judging by her lips, he concluded she just might have. Her lips were of porn star proportions. When he'd submitted the initial change he'd actually imagined some slightly puffier, but natural lips. This was way over line, but he wasn't complaining. As far as Lisa knew, she'd had these for years and gotten them out of her own free will. No harm done, right?
She could tell he was getting close to busting. Usually she loved to swallow his cum to feed her addiction, but this time however she found herself removing his glorious cock from her mouth. ..Noooo! I want it I want it I want it I want it. I NEED IT!!! She screamed internally. Her hands moved as if they were someone else's. They started jerking his cock ever so slightly, barely pushing him over the edge and aimed his spray all over her face and hair.

WHAT THE FUCK. WHY DID I DO THAT!? She exclaimed, she was frantically trying to gather the semen around her lips. SHE NEEDED IT, she HAD to swallow it. It was as if her life depended on it. After trying for a good ten seconds she realized she wasn't gathering anything. She was SMEARING it all over. Her face was now completely covered in her boyfriends cum. Before she could react her hands went to the roots of her hair and worked the semen further in, as if t was applying shampoo.

That's so fucking hot. Jim stood in amazement as he watched his girlfriend rub his seed into every surface on her face. I expected vulgar, but this is insane! Yet another bargain, he thought.

What in the hell have you done to me you little shit? I felt it earlier, that god damn app. I didn't think the stupid thing worked, but here I am, rubbing your delicious reward all over my fucking face and hair. I look like a whore! Did you make me do this trashy nasty shit? Was THAT the god damn change??? Only now Lisa started to catch on. How she spoke. Her eyes opened wide. AND WHY THE FUCK DO I SOUND LIKE SOME UNEDUCATED TRASHY STREET TRASH? I TALK LIKE A GOD DAMN TRAMP.

God damn, if Jim hadn't been so drunk right now he would've railed her right then and there. He was so fucking turned on from her vulgar display. Her new hair drenched absolutely drenched. If she'd been wearing makeup it would've been completely smeared at this point, that'd be so fucking hot! He made a mental note to do something about her makeup routine sometime soon.
As Jim was thinking about future changed he could make to his girlfriend she sat there on her knees shouting and cursing at him for doing this to her. Instead of listening Jim just dismissed her angry shouting and went to bed, he was out like a light before his girlfriend even had a chance to follow him into the room to confront him.
Utterly defeated, Lisa tried to take a shower and was off Jim's spunk. She turned on the shower, let the water run for a bit and tried to enter. She couldn't get in! No matter how hard she tried, she couldn't get herself to enter the shower. Another side effect of Jim's change to her personality. Her now very vulgar personality rejoiced in walking around with drying cum on her body. This fact became all to apparent to Lisa as she tried to wipe her face with a towel. She could pick it up and bring it close to her face, but she couldn't for the life of her make contact.

GOD FUCKING DAMN IT! Now I've gotta' go to bed looking like some dirty cheap low life prostitute. I EVEN FUCKING TALK LIKE ONE. SHIT! He's gonna get hell when he waked up tomorrow, right after I suck his cock..
As she went to lay down on her side of the bed Lisa couldn't help but feel disgusted. She tried to lay as still as possible, careful not to rub any unnecessary sperm on her pillow or bedsheets. She eventually managed to fall asleep. All night she had dreams of sucking cock and getting drenched in cum..