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When Billy Screwed Mandy	By : Jayrich Category: +G through L > Grim Adventures of Billy and Mandy Views: 26884 -:- Recommendations : 1 -:- Currently Reading : 3
Disclaimer: I do not own Grim Adventures of Billy and Mandy, nor any of the characters from it. I do not make any money from the writing of this story.

Chapter List
- 1-When Billy Screwed Mandy
- 2-WBSM 2
- 3-WBSM 3
- 4-WBSM 4
- 5-WBSM 5
- 6-WBSM 6
- 7-WBSM 7
- 8-WBSM 8
- 9-WBSM 9
- 6
- 7
- 8
Billy & Mandy’s Fright Flick

Prologue…
Deep beneath the Earth’s surface, where no man-made drill or man himself can reach alone…lies the underworld; A nightmarish realm where terror is dominant, where if even a fraction of fear can result in your very being ending up devoured. It is also the home to the one known as the harvester of souls, Death’s Master…The Grim Reaper. He steps out of his surprisingly suburban-like house that’s surrounded by a ring of fire, wearing his trademark jet-black robe and carrying his mystical scythe.
“Ah, it looks like it will be a miserable day. AAAAHHHHHHHH-HAHAHAHAHAHAHAHAHAHAHAHA!!!!!!!!!!!!!”
He then strolls off down his walkway and out of his yard, starting off the day with a morning jog (and hopefully an avoidance of Billy & Mandy). But as he jogs away from his home, a dark shadowy figure looms towards it. There’s a presence of evil coming from the figure, one that rivals even Grim’s. The figure takes the form of a shadowed man wearing a long trench coat and a fedora, before entering Grim’s home. He doesn’t delay, making his way right down into Grim’s basement and heading towards the corner. There, he finds the item that has brought him to the Underworld. The very item that has caused so much panic and chaos throughout eons…Grim’s Chest.
“Ah…this will do.” The shadowed man says in a dark, deep & evil voice. “This will do nicely.”
A low, sinister laugh fills the air as he slowly raises his hand, causing Grim’s chest to float in front of him. Then, with a quick snap of his fingers, the man & the chest disappears in a cloud of darkness, which then dissipates just as quickly as it arrived, leaving nothing & no one there.
Later, on the Earth’s Surface…
BRRRRRRING!!!!
The sound of the phone ringing fills the hallway, signaling an incoming call. It rings again as Billy turns the corner into the hallway and runs up to it. Grabbing the receiver, he puts it to his ear and speaks. “Hello?”
“Hello.” The voice on the other end is male, as well as deep & eerie, though Billy pays it no mind. “Who is this?”
“This is Billy!” He answers. “Who wants to know?”
“Hello, Billy.” The voice tells him. “What are you wearing?”
“Oh, just a T-shirt, some jeans, some sneakers…OH! And my girlfriend’s bra!” He says. And sure enough, Mandy’s pink lace bra is wrapped around Billy’s chest. The voice on the other end is caught a little bit off guard by that.
“Uh…OK. Do you like scary movies, Billy?” He asks.
“Uh-huh!” Billy enthusiastically answers.
“What’s your favorite scary movie?”
“OH! It’s the one where that blonde chick answers the phone while she’s cooking popcorn, and then the man on the phone tells her he has her boyfriend & kills him, and then he kills her when she tries to run, and then a couple of funny guys made a movie making fun of that movie, and then they made 6 sequels to it but it stopped getting funny after the second one because the two funny guys left, and then they put in a lot of musicians and…”
“BILLY!!!”
From out of a nearby doorway steps Mandy, wearing a pink sundress with the image of a daisy in front, and grey slippers. “What are you doing?”
Billy quickly switches his focus to her and decides to end the conversation. “Sorry creepy voice guy, I gotta go!”
“Eh, wait!”
CLICK! Billy slams the phone back down on its base as Mandy walks over to him, her arms folded over her chest, wearing a displeased look. “You’ve been calling the Phone Sex number again, haven’t you?” She says. “I swear if I end up getting bills for ‘Girls Going Nuts in Pudding’, I’m gonna…”
“Nope, just some creepy, lonely guy on the phone.” Billy interrupts. Mandy just scoffs and snatches her bra off of him. “HEY! I need that for the party.”
“The only reason I’m allowing this party is so you don’t start bawling like you did last year when I left for Halloween.” She tells him. “Besides, it gives me a good reason to flaunt my newfound power as Mayor of Endsville.”
Mandy refers to her newly gained position in the city’s government. Just six months ago, she used Grim’s scythe, along with a few choice items from his underworld trunk, and proceeded with a one-woman raid of City Hall. She easily overthrew the previous government with threats of torture by Britney Spears videos, and established herself as new Mayor. Soon after, she & Billy moved into the Mayor’s mansion, and have been here ever since.
GONG!!!
The echoing sound of a Bell Gong fills the hallway, and is followed by an eerie version of ‘The Funeral March’, which has replaced the doorbell. Mandy’s eyes quickly glance down the hall. “The workers must’ve changed the doorbell…I like it.”
She walks over towards the door, with a solemn Billy following her. “Aw, I wanted it to play Hells Bells.”
Mandy reaches for the doorknob and opens the door, only to see her former rival and current personal assistant Mindy standing there. She’s dressed in a white & green Japanese schoolgirl costume, complete with an extremely short skirt which leaves almost nothing to the imagination, and thigh high stockings.
“Well, I showed up for this loser party like you ordered.” She says, walking in past Mandy.
“Yeah, 5 minutes late.” Mandy replies. “I should dock you half a year’s pay.”
Mindy turns to Mandy and prepares to let loose with a verbal onslaught, until she realizes the deal she made with Mandy won’t allow her to do so. “I…am sorry, Mandy.”
“Whatever.” Mandy answers. “Just go into the Living Room and try not to mess up the place.” She’s about to shut the front door when she notices a long, white stretch limousine with music blaring from its speakers rolling up to the mansion. It’s a fully loaded limo, with a Jacuzzi in the back, kitchen in the middle and a satellite dish on the roof. As the limo rolls to a stop, the rear door flies open and out steps, to Mandy’s shock…Irwin. He’s wearing a New York Baseball Cap, a white fur jacket with a T-shirt underneath, dozens of gold chains, black jeans and a pair of sneakers that seem to be made out of mostly diamond. Clearly, life has improved for the formerly nerdy kid from Endsville.
“Hey, baby.” He says, sliding up next to Mandy and placing his arm around her. “Anyone ever tell you you’re a dime?”
“No, but I called her Nickel-face once.” Billy answers for her, before becoming distracted. “OH! That tub’s making bubbles!”
Gleefully he runs over to Irwin’s limo, leaving Irwin and Mandy alone. “So, what do you think of the new & improved I-R-Win, Yo?” He asks, using his self-given nickname. “I got the money, the fame, the bling-bling…only thing I’m missing is a fine lady by my side.”
“H-uh, you’ve really outdone yourself, Irwin.” Mandy tells him, removing his arm from around him. “You’ve gained all this success, just to build a pathetic façade around yourself.”
Irwin’s jaw nearly drops off as he hears those stinging words. “But…but I’m rich! My album just went Super-Duper Diamond, Yo!” He’s referring to his new Hip-Hop album ‘Yo, I be rich and not a Nerd, Yo!’ which has sold staggering numbers.
“Irwin, in all the years you’ve known me, I’m surprised you still don’t get it.” She explains. “Money is fleeting, and doesn’t appeal to me. It’s power that I desire, and I can get that myself.”
With that, she walks of towards Irwin’s limo, leaving Irwin dejected once more. “I can’t believe it.” He says to himself. “I’m worth 5 billion dollars, and Mandy still won’t go out with me.”
He begins to sulk in self-pity, which only lasts for a second before he’s pinned to the side of the doorway by Mindy, who’s grinning seductively at him. “Did I just hear you say, 5 Billion?”
Back over at the limo, Billy is having the time of his life, floating & giggling as the bubbles in the Jacuzzi swarm around him, when Mandy comes over. “Billy! Turn off the Jacuzzi and get out of there. You might break something.”
“But it’s not even on yet, Mandy.” Billy says, wearing a goofy grin that implies the bubbles are coming from ‘another source’. Not even wanting to know where, Mandy grabs Billy by his collar and violently yanks him out of the tub. Giggling loudly, he jumps back to his feet and follows Mandy back inside the Mansion, along with Mindy & Irwin. Mandy lead the 3 into the main Living Area, which has been redecorated and includes party decorations, an expensive couch, and a 156” flat screen HDTV with a new video game system attached. Predictably, Billy makes a mad rush for the game.
“It’s ‘Pat the Baker’ time!” He yells, jumping onto the couch and grabbing a controller.
Irwin shrugs his shoulders and decides to join in. “Well, I guess I could go for some…WHOA!!!!”
He feels himself pushed aggressively into the wall as Mindy surrounds him. “Um, I’m just gonna take Irwin for a…tour of the Mansion!” She says, hoping for Mandy’s consent.
“Whatever.” Mandy replies. And in a flash, Mindy grabs Irwin by the wrist and pulls him along upstairs, leaving Mandy & Billy alone. Mandy sits down on the couch right beside Billy with her arms folded over her chest. It’s still early, and she’s not expecting any more party guests to show up early like Mindy & Irwin did.
“This is a waste of my time.” She thinks to herself, letting her eyes wander. “I should be creating battle plans on how to take over this nation; instead I’m coddling the nitwit on Halloween. Humph, the other guests won’t be here for a while. Gotta find a way to pass the time and…”
And that’s when her gaze lands on Billy; or to be more specific, Billy’s jeans and what lies within. “Great. Now I’m horny.” She thinks. “Well, it has been two hours since I’ve ridden the monster, I could use another fix.”
“Billy, take off your pants.” She tells him.
“No thanks.” Billy replies. “I don’t have to go to the bathroom now.”
Mandy lets out a small groan. “I mean take off your pants for another reason.”
“What reason?” Billy asks, keeping his focus on the game. That changes though when Mandy climbs on top of him and pulls down her sundress just enough to reveal her round, perky breasts.
“This reason.” Even with Billy’s dimwittedness, he knows exactly what reason Mandy’s referring to. But it also offers him a conflict; finish ‘Pat the Baker’ and go for the high score, or try to reach the high score with Mandy. Fortunately for him, he makes the right decision.
Dropping his controller, he pulls Mandy closer and starts sucking on her left breast. Mandy moans as she feels his tongue over her nipple, and reaches her left hand down his jeans. Almost instantly she finds ‘The Beast’ and pulls it out into the open before slowly stroking the shaft. Billy’s hand goes to work as well, as he reaches under Mandy’s sundress, into her white panties and beings rubbing her snatch, making her wetter by the moment. Mandy’s training of Billy has made some progress during their relationship, especially in the sex department. While he’s turned into an above-average henchman for her world domination cause, she mostly keeps him around for what he can do in the sack.
“Ohh…” She utters, as Billy’s tongue continues to go to work. Soon, she feels her needs deem more than just simple licking.
“Alright, enough foreplay.” She says, pulling away from Billy before bending over on the couch. She lifts up the hem of her sundress and pulls her panties down below her rear cheeks, giving Billy his target. “I want it hard, fast, and good…now!”
Billy doesn’t have to be told twice, surprisingly, as he pulls his jeans & white briefs down to his knees and positions himself behind Mandy. As she splits her love lips open for him, Billy grabs hold of her hips and pushes his manhood into her wet snatch. Mandy winces with each inch driven in, gritting her teeth and clenching the armrest of their couch, until he’s completely inside of her.
“DAMN! You’d think after all this time; I’d be use to it!” She thinks.
“HEE-HEE! It still feels warm, Mandy!” Billy says.
“Just shut up and fuck me!” She barks, and Billy complies. He pumps his hips back & forth at a rapid pace, not bothering to start off slow. It’s just how Mandy wanted it, as she buries her head onto the armrest while keeping her ass in the air. She can feel his Cock acting like a jackhammer, pounding her pussy without remorse and making it wetter by the second.
“OHHH…” She moans while holding on to dear life. She finds herself gently biting her index finger at first. But soon it turns into sucking, just for the sake of having something in her mouth. It’s a fact that she’s learned to live with, she’s become addicted to Billy’s Cock. Billy decides to intensify the moment by moving in closer. He leans right on top of Mandy as his hip movements almost become a blur. Mandy’s eyes nearly roll into the back of her head as Billy’s Rod probes the deepest parts of her inner walls again & again, at a phenomenal rate. Beads of sweat that form on her body quickly fly off with every impact Billy makes. She grunts & moans with each thrust, and as her right leg dangles off the couch, she feels herself coming to her limit like a Bullet Train.
“UGH…OHHH…AAAAAAAAAGGGGGHHHHH!!!!!!!”
Without warning, her orgasm arrives and overtakes her. She cums so hard her body convulses and she squirts out her love juice. Her vision even becomes blurred momentarily, and she experiences a short loss of breath. It’s at this time Billy hits his limit, and lets off into Mandy like a fire hose, shooting a huge load inside of her. So much that it begins seeping out the sides of her vaginal lips. Mandy takes a short moment to catch her breath, and even though there’s not a smile on her face, there is a look of satisfaction.
“Heh, great way to waste time.” She says, referring Billy’s reaming of her vagina. She reaches down and moves her hand along the carpeted floor until she finds Billy’s video game control. Picking it up, she starts a new game, much to Billy’s chagrin.
“Hey, that was my game!” He complains.
“And now it’s mine.” She responds, pressing start.
“But what am I gonna do?” He asks.
“You just lie there and keep your Cock inside of me.” She tells him, rolling over so that he’s behind her and she can see the TV. “I play better with it there.”
Meanwhile…
Upstairs in the Master Bedroom, Irwin sits solemnly at the foot of the bed, with his jacket hanging off the bedpost, and head buried in his hands. Mindy however, is feeling the complete opposite, as she stands in the bathroom and looks up to the sky giving her thanks.
“Thank you, thank you, THANK YOU!” She says. “I can sex up this loser, marry him, then take him for all he’s worth! Plus it’ll get Mandy off my back! Now, time to work my charm…”
She straightens out her costume and pushes her bra up to bring more attention to her perky breasts, before stepping back out into the bedroom and strolling seductively towards Irwin. “I just don’t get it, Yo.” He says. “What do I have to do to get Mandy to like me?”
“The question is why are you crying over a loser when you got a much better option in front of you?” Mindy says, leaning in close to him to show cleavage.
“I do?” Irwin asks, confused.
“Of course you do…me!” Without warning, she shoves Irwin onto his back on the bed, and leaps in after him, landing by his side. She wraps her leg around his and runs her fingers up & down his body, before lifting up his T-shirt and unbuckling his pants.
“Whoa. You’ve never paid this much attention to me back in the day, Yo.” Irwin says.
“Well, let me make it up to you.” Mindy replies seductively as she reaches in his gold-lined boxers and pulls out a Rod that almost takes both hands to hold firmly. “Good Googa Mooga!” She thinks. “He’s almost a monster like Billy! Hmm, I gotta start fucking losers more often.”
She starts off by licking the head of his shaft, before engulfing it with most of his shaft into her mouth, making his Rod even more erect. Her head movements are slow as she gives his Cock more tongue-attention, circling around in her mouth and running it up & down the shaft. Her lips tighten up, and as she drags them along the shaft, Irwin can’t help but to grin in pleasure.
“Aw man, now I know how the Endsville Football team feels every time you give them pep talks.” He says.
Mindy just rolls her eyes and continues working her tongue and gently fondling his balls. After a minute, she glances up and notices Irwin’s state of euphoria.
“Perfect! I got him right where I want him.” She thinks. “Now to seal the deal…”
She removes his Cock from her mouth and strokes it gently while rising to her knees. She then climbs on top of Irwin and straddles him. Gripping his Rod, she pulls aside the cloth of her Fluffy Cat thong before guiding herself down onto Irwin’s stiff member. She quivers and shudders with each inch taken in, before his entire manhood disappears inside of her. Overwhelmed, she falls forward and puts her arms up, catching herself.
“Oh God…I can barely keep myself from cumming now!” She thinks. “Who knew Irwin was packing like this?”
“Damn Mindy, I didn’t know you’d be this tight,” Irwin tells her, “Especially with all the rumors about the Basketball team, Yo.”
“Shut up and don’t ruin this.” She barks at him, before rocking her hips. Moving them up & down, she places her left hand on Irwin’s chest to keep balance. After a minute, Irwin starts pushing himself up in unison, slamming his Cock deep with every thrust.
“OOOHHHH…” She moans weakly, biting her lower lip as her body jerks up & down from the force of Irwin. Soon, her breasts jerk out of her blouse and bounce wildly as Mindy holds on to dear life. “Oh God…this is so good! But I need more…Irwin, spank me!”
“Say what, Yo?” He asks confused.
“I SAID SMACK MY ASS, YOU NERD!!!” She yells, which makes Irwin immediately comply. He gives a good palm slap to her cheeks that makes her tremble with pleasure. “Oh yeah, Mama likes her ass spanked! Keep going, baby!”
Irwin continues to do just that, smacking her ass over & over as she continues to ride him hard. Each thrust brings a grunt or a moan from her lips and brings her closer to a roaring climax. Drops of sweat roll down her skin and fly into the air as Irwin drills her snatch mercilessly. He has one hand on her hip, and the other fondling her breasts, which she assists with using her hands. After a minute, Mindy ceases her bouncing and starts rocking her hips back & forth, working Irwin’s Rod around in a circle. Her hair is a frazzled mess, and barely retaining its ponytail state. But she could care less about that. Even the thought of taking Irwin for all the money he has is gone from her mind. Her only concern is riding his Cock, and preparing for the impending Orgasm approaching, hard & fast.
“Oh God, I’m cumming!” She screams. “I’m cumming so Hard!”
“ME TOO, YO!” Irwin adds.
Mindy feels a steady stream of Irwin’s cum shooting out inside her as her entire body tenses up. Her mouth lets out small sounds for a moment, before she falls limp on top of him, feeling completely spent. Irwin’s load begins to seep out from the side of her wet pussy lips, and he slowly pulls his Cock out of her, only to shoot another load all over her glistening & red rear cheeks. It takes a moment, but the two catch their breaths, and Mindy rolls off of Irwin and onto the bed beside him. A moment later, Irwin breaks the silence.
“Hey…what was up with you asking for a spanking, Yo?” He asks.
“Just…a fetish…” Mindy replies, remembering back to when Nergal Jr. Tentacle-raped her and exposed the fetish. “I’m gonna go get some toys, so we can have more fun.”
She slowly rolls out of the bed and makes her way out of the room, with Irwin affectionately calling back to her. “Don’t be long, my pet.”
Mindy walks out into the hallway and descends down the stairs to the main floor. Once there, she hugs the wall and begins to sneak along the floor, not wanting to make a single sound to draw Mandy’s attention. She approaches the doorway that leads to the Living Room, where Mandy & Billy are still playing video games. With the stealth of a ninja, she quickly tumbles across the doorway, stands up and re-hugs the wall. After a moment, a smile grows on her face, as she thinks Mandy’s none the wiser. Continuing on, she reaches the basement door and opens it. She climbs down the stairs and reaches the bottom, then scans her eyes and searches.
“Mandy’s got to have it somewhere.” She whispers to herself, before spotting a large trunk in the corner of the room. Running over, she notices the real bone trim and skull lock located on the front. It’s Grim’s trunk, but Mindy could care less. Taking a hairpin out of her hair, she pushes it into the lock and, after a few twists, jimmies the lock open. A swarm of darkness erupts from the trunk, knocking Mindy back onto her rear.
“Geez, you’d think she’d clean this thing out.” She utters, picking herself up and reaching into the truck. She rambles through dozens of objects; none of them can be made out in the darkness. But again, Mindy could care less about it.
“No paddles, no dildos…ARRGHH!!!” She says. “Not one sex toy in here! Hmm…maybe she keeps them in her room…”
She gets back up to her feet and rushes out of the basement, her task taking her elsewhere. But as she shuts the door behind her, in a lone corner of the basement illuminated by moonlight, the darkness that was freed from Grim’s chest begins to take shape. It starts out as a swirling black ball mass, but slowly it takes human form until it resembles the dark man who stole Grim’s trunk from the underworld, wearing the same trench coat & fedora. The man, floating just above the ground, quickly ascends the stairs out of the basement, and then passes the Living Room doorway, leaving nothing but a cold breeze which Billy & Mandy feel, but both shake off. He soars up the second staircase upstairs and moves swiftly through the hallway, until he spots Irwin lying in bed in the Master Bedroom, staring at his ‘bling’.
“Aw yeah, The I-Dog’s the man.” He says to himself, before feeling a cold presence inside the room. Looking towards the doorway, he sees the dark man entering the room, holding something very sharp high in the air. “Hey Yo, are you the Butler? Cause I could go for some…appetizers?”
It’s at this moment Irwin notices the weapon in his hand. “No, No please! I just got laid! You can’t kill me!” As the man looms closer and his grip on the sharp item tightens, Irwin senses his impending death near. “Why does the black guy always die in the Horror stories, Yo?”
SHHHHHHHHRACK!!!!!!
The sound of metal ripping flesh fills the air, then disappears just as quickly as it came. It’s followed by a dead thump on the floor, as if something fell down onto it. Something like…a human head.
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When Billy Screwed Mandy