Chapter #7Ben's Big Prank Backfires by: Mr.Z   It was a hot summer day as Ben and Gwen continue their usual bickering. Their grandpa was driving them across the country in his RV that is nicknamed 'The Rust Bucket.' What was supposed to be a fun Summer trip turned into an alien infused adventure as Ben found the Omnitrix, an alien device that allows the wearer to transform into different aliens. This device that was stuck on Ben's wrist seems to attracts danger as they have crossed paths with aliens, monsters and mad scientists. One of which was a spellcaster of whom Gwen learned magic from. "Get your big butt off of my seat." Ben said as he and Gwen fight over the booth seat at the table.
"Ben, you are being such a dweeb. There's enough room on the bench for both of us." The red headed pre-teen yells as she tries moving Ben who is laying down on the bench.
"Not with your big butt. Just sit at the other side. I was here first." He said as he tries kicking his cousin away.
"I don't like facing away from the front. It disorients me."
"What are you, a baby."
"You're being a baby."
"Would you two stop." Grandpa Max shouts which causes the two kids to behave. "I thought with all of our adventures, you two would learn to get along." The two just sit in silence with their arms crossed. Ben sticks his tongue out at Gwen.
"Err, I'm going to the bathroom." Gwen storms off. Ben smiles and returns to laying down in the booth as he plays some hand held video games. The Rust Bucket stops at a gas station as Grandpa Max goes out to fill up the tank and wash the windshields. Ben got bored being by himself and decides to play a prank on his cousin but how will he sneak into the bathroom.
"Hmm, let me see which alien would be best for the job." The young hero started going through his Omnitrix. "No, not Heatblast. Daimondhead wouldn't be good. I could be XLR8 and switch things around in super speed. Or switch to Upgrade and take control of the hairdryer. Oh wait, Grey Matter would be perfect with his super intelligence, I bet I can think of something great with him." Ben slammed down on the Omnitrix and transformed into the teeny tiny grey alien with the triple digit I.Q. "Hmm, Let me slip inside and see what I can do." Ben crawled under the door frame into the bathroom.
Getting stuck under the door, Ben pushed himself forward until he got unstuck and flew forward until he bumped into Gwen's giant shoe. He then looks up and freezes as he sees Gwen standing over the toilet with her white pants down to her knees. The ginger girl wasn't peeing or flicking her bean though, instead she was jerking off her huge cock. Ben couldn't believe what he was seeing and who can blame him. It's not every day you find out your female cousin is a futanari with a magnum dong that would put most porn stars to shame. Gwen was furiously stroking her 13 inch long veiny dick. Her hand going up and down her shaft, causing her foreskin to rub up and down her mushroom head. Her balls were as big as baseballs and bounced from front to back with her strokes, her smooth scrotum looks like it was overflowing with baby batter. Ben took a step back and noticed that her ass was huge too, looking like it was doubled it's normal size when she had her pants on. Her jiggly butt cheeks clapping as she jerked off, her round cheeks opening to show her puffy taint connecting her balls to her bulging donut hole. Ben then sees Gwen's other hand was holding something to her face. It was Ben's sweaty underwear, Gwen was masturbating while huffing it. "Stupid Ben. You make me so mad I just wanna shove my cock up your butt." She fantasized about having angry sex with her own cousin. Ben couldn't understand what was going on. Ever since Gwen got her book of spells, she has been messing around with some of the naughtier stuff in secret. Like giving herself a penis to see what it was like, making her butt bigger, and making magic underwear that concealed it all. However, being a horny pre teen, she didn't know how horny having a penis would make her and since there is no internet, her stupid cousin was the only fap materiel she had. "Stupid dweeb, I bet you wouldn't even be able to take me balls deep but I'd like to try." She grunts as she continues to rub her huge fuck stick. Her strokes get more rabid as she inhaled more of Ben's musky underwear. She then placed the tighty whitey's over her drooling piss slit and her fat nuts retracted as she unloaded a massive load.
SSSSSSSSSSPPPPPPPPPPIIIIIIIIRRRRRRRRTTTTTTTT!!!!!!!
SSSSSSSSSPPPPPPPPPIIIIIIIRRRRRRRTTTTTTT!!!!!!
SSSSSSSSPPPPPPPPIIIIIIRRRRRRTTTTTT!!!!!
Gwen's thick cum pours out, soaking Ben's briefs as it overflows and pours into the toilet. The horny teen then tosses them into the hamper. "Have fun explaining to Grandpa about that. Hmm, maybe there is a spell in here to give Ben a big bubble butt." Gwen said as she looks through her spell book. "Oh this one is perfect. Whence I cast this, everyone outside of this bathroom will be oblivious to the magical changes I've made. won't have to wear these anymore." Gwen bent down and took off her white pants and underwear. She then casted her spell as Ben hid underneath the sink. "Now to test it." She said as she outs back on her pants. Without the underwear though, white pants stretched to their limits to cover her dummy thick booty and her ten inch soft cock made a clear outline in her crotch. She stepped out of the bathroom to say hi to Grandpa Max. Ben's Omnitrix timed out and he turned back to normal.
Ben then snuck out of the bathroom with no one around. Gwen and Grandpa then came back into the RV. "Hey, Dweeb. What's up." Gwen said as she placed her hands on her wide hips, jutting out her crotch. Ben had to pretend not to notice or else she would know he was spying on her.
"Nothing." He said as Gwen was loving this moment. She then sat on the bench and this time there was no more space for both of them. "Where are we going now?" Grandpa Max said they're going to...   indicates the next chapter needs to be written. |
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