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_Tommy pulled his fingers out and then guided his stiff penis into position with a trembling paw. Holding it, he angled it forward and grunted as his tip met the warm groove of his sister. Tommy pushed, felt it slide between his fingers and along her slit, until it found her entrance. Ever so slowly, he entered her, nudging little by little into her welcoming vagina while they watched the film. He could hardly stand it, resisting the urge to simply thrust deeply into her, but it felt so very nice. Tommy withdrew his paw and brought it around to stroke at her tummy instead, as he eased his erection inside. Finally their two bodies met and each gave a little moan as he came to rest, only his soft balls remaining to brush against her legs.

Suddenly there was a sound in the hall, they both stiffened at an awfully familiar sound of keys jangling, entering the front door lock and finally the front door opening with a clatter.._

The front door led into the hall, which lead directly to the living room, its door wide open. Tommy and Katie froze, holding their breath, it was hours before their parents were due back. Locked together intimately under the blanket, clothes far out of reach, they looked with dread towards the sound of the intruder.

A childish voice called out, "Anybody home?! Tommy, Katie? Where are y.." the visitor stopped as he shuffled into the living room trailing a small suitcase and saw the two where they lay. It was a boy, nearly 11 years old, and a leopard much like the twins. He surveyed the scene briefly, dressed smartly in a pair of new looking jeans, white trainers and a blue t-shirt, wearing a silly (so Katie thought) baseball cap back to front over his headfur. "Hey Tommy, Katie, Aunt Susan gave me the key and I let myself in, hope you don't mind," his head snapped around suddenly, "Oooh, pizza!" The boy smiled wide and set his suitcase down, quickly darting over to the table and picking up a slice of the cold leftovers. The smile faded however, once he bit into it, "Eww, gotta heat that up!" The cub put it back down again and grinned inanely at the pair.

"Hi Peter.." Katie said impatiently, rolling her eyes and not getting up, "We, um, forgot you were coming so early." She looked at her cousin with feigned indifference, desperately keen to get rid of him somehow.

"Hi!" He turned around, acting quite excitable still, "Ooh, you're watching the Lion King!" The boy turned back and looked at them a little closer, noticing their unusually close embrace, "Why are you two.."

Katie cut him off, reaching out from the blanket and pointing suddenly at the door, "Hey! Why don't you take your suitcase upstairs to Tommy's room, get unpacked, we'll be coming in just a sec.." She almost blushed despite herself, Tommy nearly snorted.

The leopard boy looked around, slightly confused at her abruptness, "Um.. Sure, Katie! I'll be back in a flash!" With that, he picked up his suitcase and sped out of the room, soon making a lot of noise as he hefted his case up the stairs.

Katie growled and thrust her hips against Tommy, breaking him out of his daze and forcing him deeper, "I can't believe we forgot Peter was staying.. And for a whole week too!" She grunted as she felt him swelling inside her, he'd softened slightly, "C'mon Tommy, there isn't much time."

He gasped as his arousal grew again and he started mating his sister in earnest, ears swivelling round at the sound of banging and clattering upstairs. She was so warm and tight around him, and it was so perfect to be hugging her from behind like this. Katie grunted as he worked up a speed suddenly, both starting to pant as he rocked his hips to and fro, in and out against her bottom. Suddenly there was a terrible sound, feet running down the stairs and a few seconds later Peter came running into the room.

"All done, Katie!" He beamed proudly, obviously keen to waste no time with his cousins. The cubs stalled in their frantic rutting, trying to look casual as they still lay intertwined under their blanket. Peter peered at them closer this time, fascinated, "You are cuddling! Eww, but why?!"

Katie smiled sweetly but her eyes were blazing, "Peter!" She lowered her voice and started again with some effort, "Peter.. You must be starving, why don't you take the rest of the pizza and go take it to the kitchen, heat it up? We'll come join you in there in just a sec.."

He opened his mouth to speak, saw her eyes and thought better of it. Glancing suspiciously at them a few times, the boy came around the table, picked up the pizza box and then almost broke into a run as he headed out towards the kitchen.

Katie called after him, "And don't leave it unattended in the oven! Stay out there till it's done!". She sighed and slumped back down onto the sofa, clenching her paws in frustration. Pleasantly surprising her, Tommy started to thrust straight away, stiffening in her again as the mood returned. He soon sped up to a frantic pace, she gave a quiet moan at the feel of his stiff penis working so eagerly in and out of her. Suddenly he was pawing at her side, kind of pushing her over and raising himself up, it took a moment to comprehend what he was doing. But then Katie gave a soft shiver and nodded as she carefully rolled over with him until they were laying on top of each other on the couch. Katie was flat on her tummy and Tommy on top, he wasted no time as he started to mate her yet again

This position was new, Katie turned her muzzle to the side and huffed as her brother rutted on top of her. She felt his weight press on her, his warm body soft and furry as his crotch bumped again and again against her bottom. Katie spread her legs gently and panted as he slipped between them, slipping a bit deeper inside her as his sheath rubbed against her slit. The cub started making growly noises and nuzzling at her neck, licking it clumsily as he grew excited. She felt felt his paws grip her arms as he started to tense up, shivering and gasping while continuing to thrust urgently. Katie grew very still as she waited for what she knew was coming, what she wouldn't even protest, what she needed to feel.

With a deep groan and a shudder, Tommy stiffened on her back, exhaled noisily and ejaculated. The frantic movements were now replaced by a steady pushing as he worked to squirt all that he had up inside her, his tail rising up and pushing the blanket off them. Katie nearly cried out, stuffing a paw into her muzzle as she felt her brother's warm sperm pumping into her. The girl started to tremble, squirming under Tommy as sudden pleasure bloomed in her crotch and spread out through her body. She convulsed, hips moving up and down against him, making muffled gasps while the heat from his semen spread further and further. It simply felt too good, as she felt him continue ejaculating, like every squirt was a jolt of raw pleasure.

Katie gurgled, forcing out some strained words, "Tommy.. I can feel it.. You're making me," she groaned, writhing with pleasure, "You're making me wet inside."

A sudden clatter made them both look round suddenly. Peter was standing there with a look of complete shock, staring with his mouth open, the dropped pizza box at his feet. The twins stared back at him for a long while, Tommy's tail flagging as he helplessly finished dumping the remains of his seed, Katie trembling with pleasure. Nothing even hid their shame, the blanket was gone and from where Peter stood, he had a perfect view under their tails. But how long had he been watching..?

Tommy finally finished, and just when it seemed the moment would last forever, the younger boy lost his nerve, ran out of the room and fled up the stairs. They heard footsteps above as he evidently went into Tommy's room, closed the door and grew quiet.

Tommy was the first to speak, "Umm, Katie.." he said in worried, hushed tones, still heavy on her.

"Damnit!" She punched a seat cushion lightly with her fist, making her brother jump, "Damnit, damnit, damnit.." They lay there a long while while Katie frowned, deep in thought, till suddenly she wriggled and pushed at Tommy, "C'mon, lemme up," parroting the Lion King.

Grunting and gasping a bit, Tommy pushed himself up on his arms and then pulled out of his sister, coming back onto his haunches. He looked down at his shrivelling erection and then Katie, noting his fluids on both of them. He blushed as she tucked her legs under her and then swivelled around to sit cross legged next to him, "I'm sorry I forgot to, you know, pull out again." He glanced down at her crotch and blushed more as he saw a thin dribble of sperm leaking out of her and onto her feet, "I think, um, Petey freaked. Shouldn't we go upstairs and say something?"

Katie waved her hand dismissively at him, "I'm thinking... thinking..." She slowly looked around at Tommy, then clicked her fingers, "That's it! Okay, you go upstairs, take the pizza, go play with him on the.. what's that dumb name again? Oh yeah, go play with him on the Wii like nothing happened, I'll come up shortly with something to drink, and if he says anything, let me handle it."

Tommy frowned, "But how are we going to explain.."

She cut him off, "Let me worry about that! Now go on, just try to act normal, I'll be right behind you."

Tommy nodded slowly, not convinced, but he didn't want to argue with her. He finally clambered off the sofa and stood up, pinching absently at his sheath before bending down to pick up the pizza box. Just as he set off out of the room with it, Katie spoke again in an exasperated tone.

"Aren't we forgetting something?" She hissed, giving him a significant look. When a look of comprehension failed to appear, she jumped up off the sofa, spread her legs apart and pointed significantly at her drooling slit for a moment. Katie put her hands on her hips then, and stared at his naked crotch.

The boy hung his head, "Oh.." as he finally remembered he was still naked, setting the pizza down on a chair. He ran back over to the sofa and quickly picked up his underwear after untangling it from his sister's. Slipping them back on, Tommy came around behind the sofa to find his shorts and t-shirt where they lay next to his sister's clothes. In a few minutes he was dressed and looking presentable, Katie not too far behind. On a strange impulse he came back over to her, kissed her on the cheek and then picked up the pizza and ran upstairs.

"What was that for?" She asked, but he was already gone.