Adult-FanFiction.org : Cartoons

Falling for Gravity part 1	By : Fanfictionfan360 Category: +G through L > Invader Zim > Het- Male/Female Views: 1359 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I do not own Invader Zim and Gravity Falls or their characters, Jhonen Vasquez and Alex Hirsch own those rights, I am not making any profit for writing this

Chapter List
- 1-Falling for Gravity part 1
- 1
Falling for Gravity part 1

(Invader Zim/Gravity Falls crossover)

“I can’t believe you’re dragging all of us out to the middle of butt fuck nowhere just so you can visit one of your internet boyfriends” Gaz grumbled as she lugged her luggage to the trunk of Dib’s car

“One, he’s an online friend, not a boyfriend and two, you need to get out more, honestly it’s been like a month since you last stepped outside, you’re so pale that you’re practically see through, the fresh air will do you some good” Dib retorted from the driver’s seat to which Gaz just huffed slamming the trunk shut

Rolling her eyes as Gaz then proceeded to kick Zim further across the back seats so that she could stretch out Tak turned her gaze to Dib as he started to engine “so how did you convince her to come anyway? Most days I can’t get her to leave her room to eat”

“I said I’d pay for half of her next Game Slave” Dib responded to which Tak gave a knowing nod, it was pretty much the only way to make Gaz to remotely anything that didn’t revolve around gaming, streaming for donations or both

“Zim does not understand why we did not use the Voot Cruiser!” the Irken in the back seat complained as Gaz made it obvious that she was commandeering the entirety of the back seats, the Goth girl laying down with her head against the locked door and her feet pressed painfully against Zim’s arm and ribs as she smirked at him

“The Voot Cruiser is smaller than the damn car and I’m not putting up with being crushed in the back of that thing again! It was bad enough that you put GIR in the back with me as well!” Dib retorted to which a quiet robotic giggle echoed from the trunk “you brought him along?!”

“GIR cannot be trusted on his own in the base, I do not wish to speak of what Zim found last time GIR was trusted with the house to himself” the Irken explained shuddering at the memory before letting out another pained grunt as Gaz ‘playfully’ kicked him in the face

“This is gonna be a long drive” Dib sighed starting to feel the beginnings of a headache already

(Meanwhile at the Mystery Shack)
“When are they getting here?” Mabel asked impatiently bouncing on her seat on the Mystery Shack counter, her considerable bust bouncing with her even under her tight fitting sweater as she whined childishly
“It’s a six hour drive Mabel and they left five hours ago so it’ll be another hour” Dipper sighed without looking up from his book, his hyperactive sister having been asking the same question once every half an hour over the last five hours, thankfully for him his patience had grown wonders over the years of spending summers at Gravity Falls
Huffing at his response Mabel hopped off of the counter and walked off telling her brother that she was going to go play with Waddles, Dipper simply nodding and grunting as his twin walked out of the door
As the brunette left the door barely had a chance to close as it was pushed open again as Pacifica made her way in “Mabel still acting like a little kid on Christmas morning?” the blonde asked to which Dipper nodded with a sigh as he set his book down “she really is too eager to meet your friends”
“I accidentally showed her a picture of Dib and his sister and now she really wants to meet the ‘big boobed Goth lady’, she spent hours begging me to ask Gaz for nudes” Dipper sighed as he sat back in his seat “thank god she got bored though, I don’t think I would have survived another hour of her begging and questions”
“I see, so we have an hour before anyone turns up?” Pacifica inquired to which Dipper nodded, the blonde smirking deviously before proceeding to drop her coat showing that aside from her heel boots she was completely naked underneath “then we have an hour to kill”
Looking Pacifica up and down Dipper sighed before laughing wearily “you know, I’d normally turn down risky sex at work this early in the day but after the morning Mabel has given me I could really use a quickie” he admitted as he then stood up from his seat and started to undo his pants
“Good answer” Pacifica grinned as she slid down to squat in front of him, biting her lip as she watched the cock she had grown to worship fall free from his pants, her pupils becoming hearts as she gently took hold of his fat meaty 16 incher and leaning forward to nuzzle her face along it “I love this cock more than anything…”
“More than me?” Dipper asked coyly to which Pacifica glared up at him
“Don’t ruin the mood, you’re lucky you’ve got me to dirty talk” the blonde hissed back as she ran her tongue along the top of his cock from head to base, the heady flavour of it soon soothing her glare as she shuddered and purred, her pussy visibly dripping as she then opened wide to take his cock deep down her throat, her eyes rolling back as she pushed her tongue out to press it to his balls
Groaning with pleasure Dipper rested back against the front desk as Pacifica put her all into the blowjob, gyrating her head as she bobbed it along his shaft letting his cock explore every inch of her hot wet mouth and throat, her entire body shuddering with every moan she let out showing that she was enjoying giving him oral as much as he was receiving it “my god Paz…” he groaned as she took hold of his waist and pressed her face firmly to his groin throating him as deep as she could
(Back in Dib’s car)
Sighing as she effortlessly beat the final level of her newest Vampire Piggy Hunter game on her GameSlave 10 for the fifth time that trip Gaz begrudgingly turned off her handheld and put it down before lying back to rest her head on Zim’s lap
Looking up at the Irken as he sat looking bored out of the window Gaz smirked deviously before rubbing her back of her head against his groin to get his attention, Zim looking down at Gaz with a brow raised in a ‘what?’ expression to which Gaz just smirked back pulling up her top to let her huge tits jiggle free whilst her other hand pushed down her pants to flash her cunt
Sighing as she scrolled through the webpage on her phone Tak looked back over her shoulder as Gaz’s top landed on her head, the ex-Invader completely unsurprised by the sight of Gaz now completely naked and straddling Zim’s lap as she guided his cock to her dripping fuck hole “honestly I’m surprised it took her this long” she commented as she then watched Gaz slam down on Zim’s cock and start riding him like a bitch in heat
Biting her lip at the sight Tak idly let a hand run down the front of her body before sliding it into her pants, slowly rubbing herself as she watched Gaz bounce hard on Zim’s dick
“I swear they’re just trying to make me crash” Dib hissed drawing Tak’s attention, the Irken noticing the huge tented bulge in his tight pants as he tried his best to keep his focus on the road
Licking her lips at the sight of his bulge Tak reached over to rub it through his pants “that looks uncomfortable, you can’t possibly drive whilst dealing with that” she purred as she then unzipped his pants and fished out his aching erection, her skilled hand wrapping around it to stroke him before she undid her seat belt so that she could slide into an easier position, moving onto her side with her hand in Dib’s lap allowing her to take his cock deep into her mouth and throat whilst she continued to play with herself
Groaning as Tak started to suck his cock Dib struggled to focus on the road, they had just entered the borders of Gravity Falls so it was just another fifteen or so minutes to their destination so if he just kept focus they could get there without crashing, something he nearly failed immediately as Tak’s long segmented tongue wrapped around his tongue and started stroking it inside of her mouth
“Fuck it” Dib then sighed quickly pulling off to the side of the road to park so that he could enjoy the blowjob, reclining back in his seat and resting his hands on Tak’s head as she bobbed it along his length, his position allowing him to see the rear view mirror perfectly giving him a good view of Gaz riding Zim harder and faster until she slammed her hips down and let out a long low moan of satisfacting as she recieved a good hot cum load in her cunt and womb
(Back in the Mystery Shack)
“That’s it Dipper! Right there!” Pacifica cried out shamelessly as Dipper had her bent over the counter, her cum stained clothes in a haphazard pile on the floor as he railed her from behind, her expression a manic look of a sheer pleasure as her ass clapped and rippled against her lovers groin, her full round behind just as cum covered as her face, hair and clothes as she had brought her boyfriend to climax a good three times since she had started blowing him “I want your cum again! Cum in me again!” she demanded as her pussy started to clench in orgasm yet again
Panting with exertion and pleasure Dipper rammed into Pacifica’s spasming cunt a few more times before burying his dick balls deep inside of her as he came yet again, making Pacifica’s toes curl and clench as her face twisted in a wild blissful ahegao, the blonde crying out in ecstasy again before slumping forward onto the counter as Dipper pulled out to finish all over her already cum coated ass
Lifting her head to look back at him and demand another room Pacifica was cut off by the sound of the door to the Shack opening, the couple looking in shock to the doorway to find Dib and the others standing there holding their bags and looking at them with the same level of surprise “uuuh, we’re here?” Dib said trying his best to not stare at Pacifica, Gaz on the other hand was taking the chance to ogle both the blonde and Dipper before commenting
“You know what? I think I’m going to like it here”
Thank you for reading, hope you enjoyed it
- 1
You need to be logged in to leave a review for this story.
Report Story

Falling for Gravity part 1