Some years have passed in Elmore, and a certain blue cat boy was now in his teens. And with that, he also discovers something about himself that he never put any stock before. One, he really inherited his mother's genes, having her figure and feminine body. Two, he crossdressed many times and treated it as normal, that would also explain how he pulled off being a girl so many times.
And three... hormones. The very bane of every teenager and young adults existence. For the most part, not much has changed. He still hung out with friends, is close to his family and loves his girlfriend Penny. But lately, he's also grown interested in males as well, also revealing that he may be bisexual.
Gumball was also in college and has his own dorm and everything, separated from his family as he continues his studies if he wants to be serious and be with his girlfriend. Over the course of his days at the college campus, he started getting more and more interested in guys. Exchanging some glances, before blushing and quickly going on his way.
One instance is Gumball was interested of some guy, walked straight into a wall and felt so embarrassed afterwards. He didn't stumble this badly not since hooking up with Penny. But this only fueled his theory even more. He was possibly bisexual.
But he has no experience with other men, and besides, would anyone be interested in him? Despite all of the craziness of Elmore, he was basically the sane one. Although, that wasn't saying much. There was also the problems of his hormones acting up as well, which meant he was... horny.
Gumball, late at night went out for some fresh air and looked around. Nobody seemed to out, and he lowered his pants and underwear, leaving him exposed. He sat on a bench and wrapped his paw around his shaft, stroking himself as he started panting.
Even using his other paw to finger his anus. The blue cat boy blushes as he played with himself.
"Hhah... ahh... O-oh God... if anyone found out... I-I'd be called a pervert..." Gumball mutters to himself, trying to keep himself quiet just in case. He continues stroking himself off and fingering his asshole.
He lies down on his back, his moans starting to rise in pitch, and he bites his lower lip, a faint blush appearing on his cheeks as he starts going faster with his movements.
"Mmmhf... I-I shouldn't enjoy this so much...~ O-ohhh, fuck... I'm gonna... I'm gonna... c-c-cum...!~" Gumball then lets out a loud moan, removing his fingers from his ass and shoots his load, staining the jacket he's wearing and some on his face.
He sighs and sits up, noticing the mess he's made. He laps up his own cum and tastes it. He sighs again and  blushes some more. His arousal slowly going away for now.
"Hahhh... aw, man. Now I gotta clean this up. I really gotta take care of this." Gumball says to himself. He cleans himself up the best he can do and puts his underwear and pants back on, heading back to his dorm and cleaning his clothes.
He also hoped nobody saw him, or else he doesn't know what else to do. He doesn't want to be expelled and if anyone at least knew what he was up to... Gumball didn't even wanna think about it.
The next day, Gumball was doom-scrolling on his phone when it started ringing. He was getting a call from Darwin, his adoptive brother. He's probably nervous about finals next week and wanted some reassurance. Without a second thought, he answered. "Hey, what's up, man?" He asked.
"I know." Darwin's voice said on the other line. This sent Gumball into a mixture of confusion and worry. He knew? What did he know?
"I… I'm sorry?" Gumball replied. Still unsure what to make of this whole thing.
"What you did last night. I know." Darwin replied. Gumball let out a gasp as he heard Darwin continue. "I wasn't sure how to approach this, so I thought I'd just confirm with you."
'Oh, fuck… What the hell have I done!?' Gumball thought in a panic before speaking up. "Darwin, please. PLEASE don't tell anyone else about this! I really don't want to get expelled! Hell, what would mom and dad even say?!"
"Bro, chill. I just wanted to know if it was you; I'm not telling anyone." Darwin reassured. Gumball let out a sigh of relief.
"Okay, yes. It was me." He confessed. "I felt horny, wanted to try something new, and I cleaned everything up. Besides, how did you know?"
"Dude, it's you. You always get into crazy situations. That, and well I heard you when I went to get something and fresh air." Darwin says and Gumball could only groan in response. "So... hormones?"
"Hormones. I dunno why, dude. But it felt so good, it was fun, and I'm all kinds of screwed up. I even started to get interested in guys." Gumball explains and lies on his stomach. "I don't even know what to do. I don't wanna come off as weird, and... yeah. But... it just happens."
There was silence for a moment and then he heard Darwin giving out a low hum.
"Well... maybe there's a way to help you with your problem, Gumball." He heard his brother say, and that piqued his interest. If it means he didn't have to sneak out awkwardly and risk getting kicked out, he would take anything at this point.
"... Go on." The blue cat says, wondering what sort of idea his adoptive brother had in mind.
"Remember that transfer student, Gregg?" Darwin began. "He's pretty experienced in this sort of thing. When classes are over for the day, you could tell him about your problem."
"I see…" Said Gumball. "I guess I could give it a shot. Thanks, man!"
"Anytime." Darwin replied before hanging up. So, it was settled. He'd explain his problem to this Gregg, and hopefully, his hormones situation would be solved! Easy!
[…]
After classes the next day, Gumball was looking for Gregg's dorm room number. "No… No… Ah! Here we go!" He said as he arrived at the room that supposedly belonged to Gregg.
The nameplate read: 'Greggory Lee'. Hmm… Gumball had never heard of this guy before. Either way, he activated the dorm's intercom. "Uh… Gregg? Are you in there?" He asked.
At first, there was no response. And then Gregg's voice responded. "Who's this?" He asked back.
"Uh... Gumball Watterson. I need some help with... things. Can I come in?" Gumball says and feels very awkward. This Greggory Lee must be new, he's never heard of him. He must've not been from Elmore.
"What kind of problem?" He heard Gregg's voice from the intercom.
"God dammit..." Gumball mutters before speaking up, his face flushed from embarrassment. "... Hormone problems. I'm told by my brother that you can... help with that, since you have experience or whatever."
He waited for a response, and for a moment, Gumball thought that Gregg was judging him right now and being weird.
"Oh! Is that all? Sure, come on in, my dude!" Gregg said, his voice sounding excited which caught Gumball off guard. He didn't expect him to accept so easily.
"Uh... I... o-okay." Gumball isn't exactly sure what he got himself into this time, but he's dealt with weirder stuff in his life. "I can't believe I'm actually doing this. Dar, what did you get me into here?"
Slowly breathing out, Gumball entered Gregg's dorm. He expected it to be a mess, but surprisingly, it was pretty well-kept! As he was looking around, a yellow fox wearing the college's usual uniform. "Are you Gregg?" Gumball asked.
"That's me, dude!" Gregg replied. "So, you're having hormone problems?"
Gumball sighed and nodded. "Yeah, yeah. I've just been feeling more… 'Excited' lately. I even went outside, and… Y'know."
Gregg chuckled a bit. "I gotcha, man. Not gonna lie, I'm into exhibitionism, too."
At this, Gumball smiled a bit. At least he wasn't alone! But the real question was how on Earth Gregg was gonna help him.
"So, you'll help me?" He asked. Gregg nodded.
"Of course! Just follow me." He replied before leading him to dorm's his bedroom. When Gregg flicked on the lights, Gumball was met with quite the shocking sight.
The room was lined with soundproof padding and had a wardrobe filled with sexual outfits and multiple toys. How did Gregg keep this secret from the rest of the college?! Hell, how has he not been kicked out, yet!?
Gregg noticed Gumball's expression and chuckled. "Surprised?" He teased. "Let's begin, shall we?"
"Whoa, whoa! Time out! How...? How did... when... huh???" Gumball spluttered, and Gregg could only laugh, seeing the cat so confused and surprised.
"I have my ways~ This is a secret. Anyways! What are you into? What kinda things are ya interested in? Tame, weird, kinky?" Gregg says, getting right into it and Gumball couldn't help but be a bit overwhelmed. But this Gregg guy was genuinely trying to help him, and Darwin did recommend him... why not?
"U-uh... uhm... I-I crossdress a couple of times. One in my Mom's wedding dress and the other..." He gives a big sigh and blushes a deep red. "... c-cheerleading practice..."
"Yeah, I can definitely see ya into girl clothes. Not that there's anything wrong with that! Crossdressing is a thing, and we already established you liked to do a little risky fun outside~" The fox teases and wiggles his eyebrows.
"Stoooop...!" Gumball whines, he wasn't used to being exposed like this.
"Okay, okay. I'll control myself. So other than that, just the tame stuff?" Gregg says to which the blue feline nodded. "Cool. I got some toys, outfits... what do you want? I can make you the prettiest boy on campus!~"
Gumball's heart actually raced at that. He did... wanna be pretty, deep down inside. Looking back, wearing feminine clothing made him excited and happy. Even if he did make a fool of himself back then.
"... Can I see some outfits? I'm sorry for being so fuckin' awkward, I never done this before!" Gumball asks and covers his face with his paws. He feels like he's acting like a complete moron.
"Sure thing!" Gregg replied before reaching into the wardrobe and revealing a few dresses. Let's see… That was too frilly, that was too big… Hm? What was this?
Gumball's eyes laid on an outfit that really interested him. It was a darker shade of blue than his fur, and it was tied with a yellow ribbon at the waist. Oh yeah, he could certainly work with this~
Gumball took the dress and closely examined it. "You like it?" Asked Gregg.
"I do~" Gumball responded. "It looks nice. And the fabric is so soft~"
Gregg smirked hearing this. "Go on, put it on." He said. "It's okay; I won't judge~"
Well… If Gregg said it was all good, then there's no harm doing! Gumball took off his uniform and put the dress on. Gregg eyes him up and down and grinned. "Looking good, dude~" He complimented. Making Gumball blush again, only this time, in happiness rather than embarrassment.
Gregg walked over to Gumball and whispered into his ear. "Wanna suck me off?~" He asked.
"I… I… Sure…!" Gumball replied. Sounding a bit nervous. He never done something like that before, but like hell he was passing this up!
He watched as Gregg lowered his pants and underwear. Allowing his cock to flop out. To say that Gumball was surprised was an understatement. He was utterly shocked when he saw the size of Gregg's cock. 'I can do this, I can do this…' He thought as he got on his knees and wrapped his paw around Gregg's dick.
"Like what you see, Gumball?~" Gregg teases, giving a toothy grin. All the cat could do was nod in amazement and started stroking him slowly, getting a feel for his erection. "Mmmm... don't be nervous."
"I'm not. It's just... w-wow. Bigger than mine..." Gumball admitted as he then opens his mouth and starts licking the tip. The taste was weird, but at the same time, this made the blue cat boy more excited. "Mmm... I might be bad, though."
"No worries. This is to make you comfy after all!" Gregg reassures him and pats Gumballs' head.
"... Fuck, I need this." Throwing caution to the wind, Gumball opens mouth more and takes Gregg's cock inside, bobbing his head slowly and even purring, adding more pleasure to the fox's erection.
"Hoooooly shit, bro...! Man, you're way better than a vibrator!~" The fox boy moans, causing Gumball to blush at that, letting his cat instincts take over. But if it made Gregg feel good, why stop? He purrs some more, using his tongue to taste more of Gregg's shaft.
Gumball continued tasting Gregg's cock. Honestly, it wasn't all that bad~ 'Holy shit, this is… Amazing~!' He thought as he took more. Making him gag a bit, but otherwise, feeling good.
Meanwhile, Gregg just moaned while he felt himself getting sucked off. Holy shit, Gumball was a natural right off the bat! He'd certainly have to reward him for his lewd behaviour~ Grabbing the sides of his, Gregg began thrusting down Gumball's throat.
"Oh, fuck yeah!" He groaned. "Take my cock, Gumball~!"
Gumball's eyes widened at Gregg's sudden forcefulness. Although, he quickly grew used to it. After all, he was really into it!
On and on it went before Gregg made his announcement. "I-I'm about to cum!" He moaned out while leaking pre.
'Yes! Cum in my mouth! I need it!!' Gumball begged and hollered in his mind before bracing himself for what was about to happen.
"That's what I thought~" Gregg breathed before tossing Gumball onto the bed. He was laying down on his back with his glorious bubblebutt in full view. After taking off the rest of his outfit, Gregg poked at the blue feline's tight entrance.
After a few pokes, Gumball got needy. "Please…" He muttered.
"Please, what~?" Gregg teased. In response, Gumball let out a low whine.
"Please! I… I need your cock inside of my… B-Boy pussy…" Gumball confessed. Kinda getting used to the term Gregg used. "Fuck me! I need it badly!!"
Gregg chuckled a bit. Screw getting a compliant for the noise, this is so worth it! Without a second thought, Gregg finally slammed inside. "Nngh! Take it!" Gregg grunted.
"Aaahn~" Gumball moaned girlishly. "Yes! Fuck me! This is my purpose now!"
Well, who was Gregg to deny such a request? That being said, Gregg began thrusting hard into Gumball's tight asshole. His cheeks bouncing and jiggling all while both males moaned and groaned like crazy. Gumball's eyes rolled back and his tongue flopped out. Holy shit! Forget masturbation, this was a thousand times better!
"Oh my God, yesssss!~" Gumball moans loudly, wrapping his legs around Gregg's waist, not letting go. He looked like a true whore, getting dominated and used. "Fuck me!~"
"God, dude... You put most girls to shame! I could get used to pounding this fat ass~" Gregg says and moans, thrusting inside the moaning slutty cat.
"Fuuuuck!~ I don't think I'll ever masturbate again!~ Gregg...!~ Oh, fuck yeah, Gregg!~" Gumball pulls the fox closer and without thinking, kisses him. Tongue and all.
Gregg smiles during the kiss and holds him closer, increasing his pace and hearing Gumball's slutty moans and whining. After breaking off the kiss, both males started panting and moaning heavily. Gumball stared at the fox, his eyes half lidded and with a lustful expression.
"More... more, more...!~ Please... f-fuck my boy pussy!~ I... I can't... I caaaan't...!~" Gumball begs, he couldn't stop himself from smiling. This felt way too good. How the hell didn't he do this sooner?!
"Want me to get rough, kitty?~" Gregg asked as Gumball hastily nodded. "You asked for iit!~"
Gregg goes harder inside Gumball's asshole, hitting his prostate and hearing his girlish yelps and moans.
"Aaahn!~ Hhah!~ Oh, shit!~ Oh, fucking hell!~ Right there! Right-aahn!~ THERE!!~ GREGG!!~" Gumball wasn't even attempting to keep himself quiet. The please was indescribable right now, and his cock aches and twitches. Gregg grabs his erection and helps jerk him off. "Hnnhgh!~ YESSS!!!~ FUCKING USE ME!!!~ This is all I'm good for!!~"
The poor feline sounded like he was losing his mind, but the fox kept going, adding more pleasure to the needy and slutty femboy.
This went on for a while before Gregg began leaking pre. And so did Gumball. "Fuck, I'm so fucking close!" Gregg cursed. "YOU WANT MY CUM!?"

Gumball nodded vigorously. "I do! I need it!! FILL ME!!!" He begged. Well, if he wanted it, this is what he'll get!
"Then here it comes!!" Gregg moaned before he and Gumball came at the same time. Gumball's eyes turned to heats as he stained his chest and stomach while Gregg filled him up. When it was all over, Gregg slowly pulled out and stained Gumball's ass with the rest of his cum.
"Hah… Hah… Holy shit~" Gumball panted and cursed. "That was… Awesome!"
"Haaah~ I agree, Gumball!~" Gregg replied. "Hope that helped your problem."
"It did! Thanks~" Gumball replied as he slowly got back up onto his feet. "Say, can we… Do this again sometime? I-If you don't mind, that is!"
Gregg smiled. "Sure thing, dude!" He answered. "Just gimme a call, and it's a date!"
[…]
Since that day, Gumball and Gregg became lovers who did all sorts of lewd activities together.
Behind closed doors, Gumball embraced his feminine side and tried all sorts of girly outfits. And whenever he was pent up or needed to let loose, he'd go to Gregg, who happily accepts.
Gumball would really have to thank Darwin for bringing up Gregg. Of course, it was gonna be awkward explaining this to Penny when he's done. But, he'll worry about that later. Maybe when this is all over, he'll visit the fox from where he's from. 
Maybe. Probably. But that was for another story.
Right now, Gumball felt relief. And added a new boyfriend~ And that was good enough for him.
THE END