Chapter 5: The Aphrodisiac

Bart and Lisa were standing at the bus stop. The boy wanted to hold his sister's hand, but she rejected his proposal. They couldn't act too intimate in public because it would raise suspicion. Bart might even get bullied at school if the boys thought he'd turned into a sissy who liked playing with girls.

"Umm," Bart tried to start a conversation. The two hadn't spoken since their secret little playtime in the kitchen. "About what happened with mom…"

"You shouldn't try to seduce her, Bart," Lisa said coldly. "Mom's not like us. She only loves us as her children."

"Yeah, but…"

"Just because you had a wet dream while sleeping next to her doesn't mean she's attracted to you. Besides, you have me. Am I not good enough?"

"You're amazing, Lis. I love you more than anything. It's just… if mom was in on the thing, we wouldn't have to hide around the house anymore…"

"It's not gonna work, Bart. You'll just get in trouble."

Bart sighed. Lisa did have a point, but he couldn't just give up. He had to have Marge, or else his perfect slut harem wouldn't be complete.

"When you slapped mom's butt…" Lisa said with a melancholy look. "Did it feel good?"

"Yeah, it was awesome," Bart replied honestly, recalling the feeling of his hand sinking into Marge's voluptuous ass cheek.

"Is mom really that much more attractive than me?" Lisa said sadly, looking at the ground.

"No, no, no! You've got it all wrong," Bart was waving his hands wildly. This conversation was spiraling in a bad direction. He never intended to make Lisa feel insecure. "You're both beautiful in your own ways!"

"I'm just teasing, you bonehead," Lisa smirked and flicked Bart on the forehead. "I wouldn't have swallowed your stuff twice if I didn't know you loved me. Just stop staring at mom's butt so much when I'm in the room. And don't do anything stupid with her either."

Bart was relieved that his sister wasn't really mad at him. But he felt like there was a seed of truth to her act. She probably did feel that her childish body didn't compare to her mother's mature curves.

"Bus is here," Lisa announced as the yellow vehicle peeked around the corner. "Don't sit next to me. Remember that as far as everyone at school knows, we're just a pair of bickering siblings. I'll talk to you after school."

"Got it. Just make sure you get in the bus before me, so I can get a good look at that cute booty!"

"Oh, stop it," Lisa laughed. It looked like the compliment had worked at cheering her up a little.

As the school bus came to a stop, the little girl went ahead and climbed up the steps with an exaggerated swagger, walking as slowly as possible to give her brother a good, long look at her panties from the upskirt angle. Bart followed closely behind her. So close, in fact, that his face was practically touching Lisa's perfect ass. Bart took deep breaths, enjoying her feminine scent. At the last step, Lisa's hips suddenly lunged backward. Her brother's face became pressed tightly against her butt, his nose disappearing into the canyon of her crack. The good smell was intoxicating and the soft feeling covering his face made him want to never leave that place.

"Oops, my foot slipped," Lisa said mischievously, wiggling her hips slightly before taking the last step and moving on. Bart gasped for breath and then sighed dreamily. For a few seconds he had known what heaven felt like. If he got to choose how he died, getting suffocated by his little sister's ass was definitely up there.

Lisa's becoming more aggressive with her teasing. That's good. I think that her jealousy is driving this. She doesn't want me looking at other women, so she's putting in a lot of effort to make sure I'm focused on her. I can use that jealousy tactically to push the little slut even further into depravity.

"Yo, Bart-dude," Otto greeted. "You okay, man? Your sister took a wicked tumble on the steps there."

Bart realized that his nose was bleeding. He wiped the blood off with a tissue that Otto handed to him.

"Thanks, Otto. I'm fine."

He walked to the back of the bus and sat down next to Milhouse.

"Hey, Bart," Milhouse said. "Where were you yesterday? I didn't see you at school."

"I was busy," Bart waved his hand dismissively. "We've got more important things to talk about, Milhouse. Remember what I told you on the phone?"

"About covering for you if you got into trouble?" Milhouse asked.

"Yeah. Well, just a heads up. My mom might call your dad and tell him that you dared me to slap her on the butt. If your dad asks about it, just tell him it's true. Comprendo?"

"You slapped your mom on the butt? Why'd you do that? I always thought that in most families it's the children who get spanked by their parents and not the other way around."

"Well, rest assured I had a very good reason to do what I did," Bart said. "You don't need to know the details. I'm the brains of this operation and what I say goes."

"Well… you did give me your whole collection of Radioactive Man comic books, so I guess I do owe you a few favors."

"Damn straight you do. You'll be my trusted fall guy for years to come."

"Years?"

"Or for the foreseeable future at least."

When the bus arrived at the school, Bart saw Martin Prince skipping happily toward the front door. The little dork seemed unusually happy about something. But Bart wasn't particularly interested in whatever it was. He was more pre-occupied with hatching a plan to take his relationship with Mrs. Krabappel to the next level. He could just try to get detention in order to get into an empty room with her again, but that didn't seem like a good long-term plan, because three detentions during a semester resulted in a suspension.

Hmm… If I can't use bad behavior to get into a private situation with her, maybe I can try the opposite. If I really start focusing on school work and improving my grades, she might want to reward me… maybe she'll invite me to the teachers' lounge when there's nobody else there…

Man, I really don't like school work, but if hard work is what it takes to get together with Mrs. Krabappel, it's worth a shot.

"Give me your lunch money, nerd!" someone said. Bart looked up and saw Kearney, the bald bully who hung out with Nelson and Jimbo. He was pushing Martin against a locker and threatening him with a raised fist.

"I'll give you my money, just don't hurt me," Martin pleaded in a pathetic whimper.

Kearney grabbed the small stack of dollar bills from Martin's pocket. He then turned the smaller boy around, reached inside his pants and pulled up the back of his underwear.

"Wedgie!"

He walked away laughing. Martin fixed his underwear with a pained expression. He then shrugged and carried on walking while humming a merry tune. Bart was following him with his gaze.

Okay, something is definitely up with Martin. He just got his lunch money stolen and a wedgie on top of that yet he's acting like he doesn't care at all. This dude's gotta have some kind of awesome secret. I better keep an eye on him.

At history class Mrs. Krabappel was handing the students back their tests. She looked disappointed as she put Bart's test on his desk. He had received a D+.

"Bart, I'll see you after class," she said. The academically challenged young man wasn't sure if this was a good sign. But having a one-on-one meeting with his favorite teacher presented an opportunity to figure out what he needed to do to get closer to her.

After class had ended and the other students had left the room, Bart approached the teacher's podium.

"Mrs. Krabappel, I know what you're going to say. But…"

"Don't bother making excuses," Edna said with an exhausted groan. "Your dog ate your flashcards, your textbook had a coffee spill on all the pages that had the test answers… I don't care. The reason why I wanted to talk to you is that you're close to failing this class and having to repeat the grade. We've been in this situation before. Even though I like you as a person, as a teacher I can't just let you pass if you don't put in the work. I'm sorry."

"That's exactly what I wanted to talk to you about, Mrs. Krabappel," Bart said. "I know it sounds rich coming from me, but I really want to get better. I'll start doing my homework. I won't fall asleep in class. I'll study for tests. I'll do everything in my power to make you proud."

"Make me proud? You?" Edna said, rolling her eyes. "That'll be the day."

"Tell you what, why don't we make a bet?" Bart suggested.

"A bet?"

"Yeah. If I get a perfect A on my next test, you'll have to give me a reward."

"A reward? What did you have in mind?"

"I'll think of something. But don't worry, it won't be anything expensive."

"And if you fail to get an A?" Edna asked. "What then?"

"I don't know. I'm not planning on failing, so I didn't think that far. What would you want?"

"Hmm… well, I really shouldn't be betting against you, so it'll have to be a punishment for you instead of a reward for me. How about you show me what you were looking at on your phone during detention the other day?"

"W-what?"

"Don't act stupid. You were really interested in whatever was on your screen. And when I called your name, you hid it in a flash."

"Wh-why what I was looking at?"

"Well, you seemed so flustered when I got up to your desk, so it's gotta be something really embarrassing. That should be a good punishment to motivate you into really studying hard."

"…okay. Fine. It's a deal," Bart said. "But you have to give me whatever I ask for if and when I do score an A."

"Sure, Bart. As long as it's something that I can reasonably give you."

Oh, it'll be reasonable all right!

After school Bart continued tracking Martin Prince. The chubby dork stayed inside the school building rather than going home, which was odd. Bart was following Martin's movements by peeking around corners and staying out of sight. The only other person he came across was Groundskeeper Willie who was mopping the floors down the hallway. Willie was blasting music on his headphones, so he didn't notice either of the boys. Martin was humming joyfully as he entered an empty classroom.

Except the classroom was not fully empty. Ms. Hoover was there. She looked… different than usual.

"The same as usual?" Ms. Hoover asked.

"Less talking and more sucking, bitch," Martin commanded. Bart was flabbergasted. He had never heard the nerdy loser use language like that with anyone, let alone a teacher.

But even more astonishing was the fact that Ms. Hoover actually complied. She got down on her hands and knees, pulled down the boys pants and started sucking his dick with vigor.

What the hell is going on here? There's no way that Martin is secretly a stud who has older women lining up for him. There's gotta be some kind of trick here.

"Ahhh! Yeahh!"

It sounded like Martin was already done. Either Ms. Hoover was exceptionally good at fellatios, or the guy was a total quick-shot. Bart sneaked out of the school building and waited behind a tree.

After a couple minutes, Martin walked out of the door with a satisfied smile on his smug face. When he had come closer, Bart jumped out, pulled Martin by the collar, and pushed him against the tree.

"What the hell was that?" Bart asked.

"I don't know what you're talking about, Bart," Martin said.

"Bullcrap! I saw the whole thing! How does a fat, uncool dweeb like you manage to seduce an older woman like Ms. Hoover? It doesn't add up."

"It's… Jimbo… ask Jimbo," Martin cried. He had wet himself out of fear.

"Jimbo? What does he have to do with this?"

"He sells these… pills…" Martin sniffled. "They're illegal aphrodisiacs he got off the internet… they increase women's sex drive and make them more suggestible."

"Son of a beach ball! Jimbo has a miracle drug like that and he's been keeping it a secret from me?"

Bart fumbled inside Martin's pockets, but they didn't have anything of interest in them.

"So where's your stash? Do you have any on you right now?"

"I just used my last one. The effects wear off after a couple days, so you have to keep using them."

Bart let go off Martin. This information was just what he needed. He finally had what he needed to seduce his dear mother.

It was already late in the evening when Bart got home from Jimbo's place. It took a long time to go withdraw cash from Homer's account, negotiate on the price with Jimbo, and finally skateboard home, but at the end the day he returned with six illegal aphrodisiacs. The drugs were called Pheromone Pills and they were suppositories. The only question was, how was he supposed to put a pill that was the size of a marker's tip inside his mother's asshole without her noticing. Luckily, he had Homer on his side.

"Did you give mom the sleeping pills like I asked on the phone?" Bart asked his brainwashed father in the hallway after arriving home.

"Marge eat sleeping pills. Marge sleep soundly in bed," Homer replied.

"Excellent. You can go to Moe's to celebrate."

All the pieces were in place. Bart rushed excitedly to his parents' bedroom where his mother was sleeping on her back. Bart rolled her on her stomach carefully and gulped as his mother's enormous ass wobbled into view. But this position was a little tricky for a deep insertion. So, he lifted Marge's hips toward the ceiling, causing her weight to rest on her knees. Her butt now pointed diagonally upward while her upper body was resting on the sheets. From this angle Bart could clearly see that the area around Marge's pussy was completely smooth.

Wow, mom! I didn't know you shaved your pussy. That's a good girl!

Bart took out a single Pheromone Pill from the can and pulled off Marge's panties. He used the thumb and fingers of his left hand to pull apart her butt cheeks to reveal her delicious pucker. With his other hand he pushed the Pheromone Pill against her asshole. She swallowed the suppository with little resistance.

I gotta push it all the way.

Bart's entire finger disappeared inside his mother's rectum with surprising ease. If he didn't know better, he'd wager that she had experience putting stuff up her butt.

The mission was complete, but the young boy didn't want to end things there. He kept fingering the mature woman's ass as Marge moaned in her sleep. Her pussy was starting to get moist.

Yeah! You like that, don't you, mom? Even if it's in your sleep, I'm gonna make you cum with your ass.

Suddenly, the boy's cell phone vibrated. He took it out of his pocket. Lisa had texted him, asking him where he was. It was no wonder she was worried. She hadn't seen him since that morning. It was already dark outside and he still wasn't back in his room.

I guess I should go give my little princess her goodnight kiss… But first…

He pulled out his cock. He couldn't wait until morning to see how well the aphrodisiac worked. His mother's asshole was wide open for him, so he couldn't just stop now that he was this excited. Besides, Jimbo had told him that the effects of the Pheromone Pill were gradual, so it would take time to fully train Marge. She probably wouldn't let him fuck her pussy, let alone her ass right off the bat. Just because her sex drive and suggestibility increased didn't mean that she would be ready for incest instantly. Bart would have to continue giving her Pheromone Pills every few days while slowly making her more comfortable with her son's sexual advances.

That might that weeks and Bart didn't have that kind of patience right now. This was a golden opportunity to test drive his future mommy slut. He eagerly lined up the tip of his cock with Marge's seductively winking asshole. With just a slight push, the mature woman's ass opened up as the long shaft sunk between her butt cheeks with an obscene wet sound.

"Ahh, Homie…" Marge mumbled, half-asleep without opening her eyes. Instead, she tiredly put her hands on her buttcheeks and spread them apart.

The young boy didn't need any more encouragement than that. He started humping Marge like there was no tomorrow, his hips loudly slapping against her huge rear end, causing the flesh to ripple sexily.

"Yeah! Put those baby-making hips to work, mommy," Bart said. His cock was enveloped in a snug and warm embrace as he slid it in and out, effortlessly molding her insides to the shape of his dick. "Your asshole feels so perfect. It's like it was made for my penis. I always knew you that your big hips weren't just for show. Your body was practically designed for a good assfuck."

Marge's moans grew louder and her eyes were starting to open. It looked like the effects of the sleeping pills were wearing off. Luckily Bart was almost done. He took Marge's hands and used them as handlebars to push himself as deep as he could go. He could feel a torrent of semen practically exploding out of the tip of his penis into the deepest parts of his mother's most sacred hole. The cum just kept on flowing. It was longest, most satisfying orgasm Bart had ever experienced.

"Ahh!" Marge squealed drowsily.

"Yes, take it!" Bart said as he kept humping to make sure every drop of his lovejuice found itself in its rightful place inside his mother's hungry butt. He must've cum at least two juice boxes worth of semen inside Marge's perfect booty, but there was still some left. "Drink all of my cum with your asshole, you whore! Your fat fucking ass was made for this purpose."

When he pulled out, Marge's gaping asshole was dilating and shrinking slowly as semen poured out of it, dripping on the sheets. Bart took out his cell phone and snapped a dozen photos of the spectacle, admiring his work. He patted his mother's buttocks gently.

"That's a good buttslut. I'll see you in the morning, my sweet anal queen."