Horndog - Cover

Horndog

Copyright© 2025 by MrPlotThickens

Chapter 8: Naughty In The Wrong Place

Erotica Sex Story: Chapter 8: Naughty In The Wrong Place - Watch as Sirius navigates his way through the Hogwarts of the old days and the new. The way to a man’s heart goes through his belly, and the way to a woman's heart goes through her cunny—Sirius chose to live by those ideas.

Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa   Fiction   Fan Fiction   High Fantasy   Mystery   Paranormal   Magic   Transformation  

The holidays were well spent, and Sirius found himself back in school. Normally, he looked forward to meeting his best friend and going on a pranking spree with him. But this time, he looked forward to a certain redhead as he ached to feel that pleasure wrapped around him again.

He wanted to meet her quickly, but sadly, she rarely shared the train compartment with them. So, he hungrily waited for the dinner at the Great Hall and spent time randomly talking with James. To his surprise, James hadn’t seen her even once during the holiday.

Our secret must never come out. Sirius reminded himself despite feeling horny for Lily. Guilt was weighing down, but the horny was pushing it back, negating and even winning.

Soon, the train arrived at Hogwarts, and everyone reached the school on the Thestral carriages. It was simply the start of the second semester of the sixth year, so there was no long speech or sorting ceremony. But the feast was indeed as extensive as ever.

There she is!

Sirius went to the Gryffindor table and scanned around. He found Lily sitting with her female friend. However, she sat at the edge of the girl’s group, and right beside her sat James, with Remus and Peter sitting on the other side of the table.

Both their eyes met each other, and short, hidden smiles were exchanged. Initially, Sirius wondered if Lily would change her mind after long weeks of pondering since he never went to meet her. But now, it appeared he wanted her as much as she needed him.

“What do we have here?” He walked behind James and Lily and forced himself to squeeze in the middle, pushing James away so he could find himself pressing against Lily. “Behave, you two—we’re in school now. You’re going to have plenty of time after the seventh year.”

James annoyedly gritted his teeth, knowing Sirius was just teasing him. Meanwhile, Lily smirked and felt embarrassed since she had done everything with Sirius that he was telling James not to.

“How are you, Evans? Did this four-eyed dumbass write you letters?” Sirius asked as he leaned forward on the table, resting the side of his chin on one palm while looking at her. Instantly, his other hand rested on her lap and gave a squeeze.

Just as soft and warm as before. He looked at the redhead with deep hunger in his eyes. Her face had grown more charming, and her bust appeared a little more developed. Her thin brows, ivory skin, brown eyes, tender, lithe body, and that long neck were just asking to be pounced upon.

Lily licked her lips with that pale red tongue of hers, not in embarrassment but rather in a similar hunger. She did squeeze her legs, but at the same time, rested her left hand on his bulge as he blocked the view for James behind himself.

“He wrote more letters than there were holidays, but enough about that. Are you sure you don’t want us to call you Lord Black now?” She playfully asked, pressing her palm hard on his erection, making him feel utterly aroused and hot amidst the clanking of various utensils.

“Yes!” James exclaimed just then. “I forgot you became Lord Black!”

Sirius didn’t look back since this fine woman demanded all his attention, “Just acting as a Lord, for now, you two. Only after my father passes away would I be the official Lord.”

“Oh, poor you-oh,” Lily almost moaned. She felt Sirius brazenly lift her skirt. He pushed his hand in to split her legs and caress her naked inner thighs and scratched his finger against soaked loins under the panties.

“Poor me?”

Wanting to feel that tight sheath again, he swiftly tugged the middle of her panties aside and found quick access to her airy, exposed slit. It was drooling wet, needing, no ... demanding his cock inside.

“Siriu–hus ... You’re ... already a Lord to us,” she replied, saving her breath, and tried to stuff food in her mouth to disguise her moanful breaths.

Fuck! She got even hotter this holiday. Sirius found himself almost losing control. All he wanted to do right now was throw her on the table and fuck her until the entire school heard her shattering moans.

He took a cupcake from the plate on the table with his free hand and started licking the frosting off. It looked normal to everyone else, but Lily couldn’t take her eyes off his tongue, teasing the frosting from the cake and on his lips. His tongue widened, licking up the frosting like ice cream, playing with his food.

She wanted that tongue on her, doing naughty things with the frosting on its tip. Her loins were salivating with yearning.

He just enjoyed teasing this girl who was slowly edging towards her womanhood as she matured in body. He felt her smooth, hairless depth and gently pushed two of his fingers in, filling her up and making her legs shudder, opening wider on their own.

He devoured the cupcake in one big bite as if he were showing her what he wanted to do to her. Then he licked his lips and fingers, slowly and deliberately.

Lily gulped as she couldn’t stop herself. She lowered the zipper of his pants and entered the cave. To her surprise, he wasn’t wearing anything under it, and the fiery warmth of his cock quickly rested in the tight grip of her palm.

“Hey! Move aside, Sirius. She’s my girl. Why are you talking to her alone?” James barked as he ate as well.

Sirius laughed and ignored his friend, “She’s going to be all yours, my friend. I’m just trying to get to know her ... deeper...”

“Umh!” Lily suppressed her moan; her legs tightened, and her hips spasmed as he invaded her deeply, just as he said.

“She’s going to be a part of our group, after all,” Sirius added and used his thumb to tease her nub. He drew swift moans and groans from her.

She could barely hold on, so her legs clamped shut, grinding his hand stuck between them.

He was aroused, but Lily couldn’t do much with his length as there wasn’t much space to move in his pants. However, in her ecstasy, she never realized how hard she squeezed his poor member. He groaned and tried to finish the little game he had started.

“Oh...!”

“What happened? “ James looked at Lily with worry. “Wait! You’re sweating and look so red—do you have a fever?”

Fuck! Sirius cursed and quickly slipped his fingers out of her melting core as he sensed James getting up. What the hell? Let go of my cock, girl! Wake up!

“Lily, you look strange!” Sirius, before James could see them, touched Lily’s forehead and woke her up. “Do you have a fever?”

“Do you?” Just as she retracted her hand, James reached behind them and touched her forehead, too.

The two miscreants breathed harshly, Sirius more suppressed than Lily. Their hearts thumped as if they were going to burst, and their hands almost shivered, imagining what if.

“I’m fine, James. I think the food is too spicy for my taste,” she made an excuse and quickly took some dessert to eat. “Don’t worry.”

Cough!

“Ugh! It really is spicy!” Sirius supported the lie and coughed like a madman.

“Really? Let me taste it.” James returned to his seat and took a piece of the chicken.

Sirius and Lily took deep breaths of relief and looked at each other with excited smiles. They knew how close they were to getting caught and how dangerous it was. But that was exactly what made their little game so exciting.

“That was mad,” she whispered close to his face. “But I’m still so hot ... Sirius, I want you in me—now!”

Taken aback, Sirius replied, “Calm down, it’s too dangerous here. I’m supposed to be the horndog, not you.”

Is this because I didn’t visit her? He wondered why she was acting so shamelessly straightforwardly. Ugh ... She’s rubbing me again. I need to find a spot to quench this wildflower’s thirst.

“Ehm! Silence ... Silence ... Silence~” Suddenly, Dumbledore’s voice resonated across the Great Hall, and everyone looked up at him.

But Sirius didn’t as he realized how crazy this redhead had gotten. She almost tried to get down under the table after “accidentally” knocking a knife off the table as if it were some romantic erotica.

He forcefully pulled her back up before she could flip his cock out and gobble it.

“Umh ... Sirius...” she mumbled.

Good Merlin, I’ve created a monster. Sirius, for the first time, found himself being more sane than the other person.

“Later ... Let’s meet after dinner. Relax now and keep your legs open,” he told her with a firm whisper and once again caressed her honey-soft thighs and then used just one finger to please her needy, slippery sheath.

“ ... The Ministry has issued an advisory; especially for those students who belong to muggle families. Do not roam outside the school building after sunset, and the Forbidden Forest is restricted for all students, be it day or night. My dear students, these are tough times—But by overcoming all hurdles as did our four Founders, we too shall cross this brewing storm together ... Have a good night.”

With that, dinner was over, and the students began to get up.

But to Sirius’s headache, he saw Lily almost in a daze, her mouth slightly open, hot breath coming out. Her eyes were wide open but seemed hazy as if she had lost her mind. Her face was still flustered, and he found her slit even more damp than normal.

“Umh ... Sirius,” she mumbled in a low voice, using her own hand as well to push his fingers deeper.

This isn’t normal. No matter what, the Lily I know would be embarrassed doing this. Then ... No! No, no...!

He abruptly turned his head to look at James as a highly insane possibility arose in his head.

No, he won’t do something so low to his own girlfriend. No, no ... Giving aphrodisiacs is too low even for us. But at the same time, knowing how low they had gone a few times during pranks, he couldn’t ignore the possibility.

What do I do now? Can she even reach her dorm?

“Mary,” he quickly called Lily’s friend, Mary Macdonald. “I think she ate something too spicy. She’s losing her mind already ... Can you take her to the dorms with you?”

What the hell! Who would even believe such a stupid lie?

“Sure.”

She believed it? Sirius glared at the girl. Let’s try to find the truth.

Although he had just started it in the holidays, studying Legilimency was now essential to protect his secrets from getting out. So, he attempted to see what Mary was thinking.

It wasn’t easy, and he tried to focus as much as he could. But, just then, she moved and took Lily along, breaking his attempt.

Let’s just follow and make sure Lily enters the girl’s dorms at least.

“Sirius, wanna plan for tomorrow’s pranks?”

Sirius faked a yawn, “Too tired, James. I’ll see you in the morning. I might just make you my first victim this semester—I learned a few new things.”

James smirked in reply, “Oh really? Fine, the game is on then.”

It can’t be him. He looks too unbothered.


The night fell, and the students, as well as their pets, went to sleep in their dorms. After the journey and the sumptuous dinner, everyone was tired, and some didn’t even bother to change their uniforms.

Sirius covered his face with another pillow to ignore Peter’s snoring. His bed, the leftmost among the four, appeared illuminated in the faint moonlight coming from the window beside his bed. But he had no idea when something entered the room and slowly crept under his blanket, forming a large mound.

It was winter, but Sirius suddenly started feeling too warm all over his body under that blanket. Soon, his face started sweating, and his eyes sparked open. For the first time, it wasn’t because of a dream.

W-What’s this?

A little frightened and a whole lot of arousal, he quickly pulled the blanket off of his body. His heart almost burst open as he tried to hold his voice down.

Right there, still in a formal white shirt and black skirt, Lily was crouched and licking his erect shaft as if it were the greatest treasure in the world. Her breath was ragged and hot, and her eyes were closed while her entire face was sweating.

He mostly saw her red hair swaying amidst the wet sounds that she made with no care of how nasty it seemed.

“Ummm ... Sirius,” she suddenly moaned and looked at his face. “I need you...”

She quickly unbuttoned her shirt and threw it away. Then she took off her skirt, followed by her bra and panties. Then, like a lioness on a hunt, she jumped on him, lying almost flat on his body, and licked his neck with greed.

Sirius felt a rush of pleasure sweep him through as his member was pressed under her belly, fully erect and ready to enter her. At the same time, her warm and soft body rubbing against him left nothing to imagine. Her perky mounds were taut and tips erect. However, knowing where he was and the fact that his friends were sleeping nearby invoked a unique beast within.

“What are you doing?” He tried to talk her out of it in a hushed tone.

“Umm ... Put it in...” She murmured back, her voice suppressed and sounding nothing like normal. She was harsh and roughly tore his clothes, ripping the shirt buttons.

Sirius rubbed his hand on her back, tugging away her wild red hair off his face. Her warm skin slowly aroused him as well, and despite all the common sense that told him not to go ahead, he decided to just be himself and eat the pie when it presented itself to him.

“Fuck it!” He cursed under his breath and began kissing the side of her face while she licked and bit his neck. His hands went behind her and caressed her flaming hot, satin flesh. He cupped both her asscheeks and gripped them hard, spreading them apart and letting the cold air of the room tickle her petals.

“Oh!” In her arousal, she moaned repeatedly.

Fearing his friends would wake up, Sirius found no option but to take her mouth. He grabbed a bunch of her hair from behind, roughly pulled her mouth on his, and exchanged the wet heat.

She didn’t mind his rugged handling at all and seemingly got more excited as she quickly spread her legs apart and straddled his waist, right atop the throbbing bulge pressed under her weight. She began to move her hips, rubbing herself on him.

“Umm...” Lily mauled his lips without a break, breathing into him with steamy lust.

Creak!

Sirius stopped and looked to his side as he heard a bed creak. Quickly, he grabbed the blanket up and covered themselves all the way. He kept his lips pressed onto hers to ensure she didn’t moan.

 
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