Author's Notes: Ruby was my favourite part of the new season, and the thought of her and Clara meeting is too good to resist.

Clara Oswald's TARDIS hummed quietly as Ruby Sunday tentatively approached the strange American diner. The blonde teenager was understandably hesitant to go inside given she knew it was far more than just a diner. But Clara, a short brunette with a round face and an air of confidence that was almost palpable, had invited her in, and Ruby couldn't resist the opportunity to explore.

As soon as Ruby stepped inside, she was struck by the strange, otherworldly atmosphere of the TARDIS. It was a smaller console room than the Doctor's, lit in stark white light. The only dash of colour was Clara herself in bright blue.

Clara, seemed completely at ease in the strange surroundings, her eyes flicking over the controls with a practiced ease that suggested she had spent a lot of time here.

"Welcome to the TARDIS," Clara said, her voice low and sultry. "I'm glad you could make it."

Ruby couldn't help but feel a little intimidated by Clara's confidence, but she was also intrigued. She put on a good show, trying to look non-plussed as she commented: "not bad." There was something about the brunette that made her feel excitement. And when Clara stepped closer to her, her eyes locked on Ruby's, the teenager couldn't help but feel her breath hasten, her breasts rising and falling more heavily.

"I've been watching you," Clara said, her voice barely above a whisper. "Always interested to see who he replaces me with. You're so young. So…" she paused, searching for the right word: "innocent."

Ruby's heart was racing now, her breath coming in shallow gasps. She had never felt like this before, so turned on and yet so afraid. But Clara seemed to sense her fear and leaned in to reassure her.

"Don't be afraid," she murmured, her lips brushing against Ruby's ear. "I won't hurt you. I just want to show you how good it can feel to let go, to give in to your desires."

And with that, she kissed Ruby, her lips soft and warm against the blonde teenager's. Ruby felt herself melting, her resistance crumbling as Clara's hands began to roam her body. She felt Clara's fingers on the straps of her black vest, pushing them aside and rolling the rest of the fabric down, revealing her bare breasts. Clara cupped them in her hands, her thumbs brushing against Ruby's nipples, sending waves of pleasure coursing through her body.

Ruby couldn't help but moan, her hands reaching up to tangle in Clara's hair as the brunette continued to explore her body. She felt Clara's fingers trailing down her stomach, undoing the zipper of her skirt and letting it fall to the floor. Clara knelt down in front of her, her eyes locked on Ruby's as she slowly pulled down the nervous 19 year old's panties, revealing her wet, eager pussy.

Clara leaned in, her tongue flicking out to taste Ruby's juices. Ruby gasped, her hands gripping Clara's shoulders as the brunette began to lick and suck at her clit. It felt incredible, better than anything Ruby had ever experienced before. "Oh, babe…" she moaned out. She could feel herself building towards an orgasm, her body tensing as Clara's tongue worked its magic.

But just as Ruby was about to cum, Clara pulled away, a wicked smile on her face. "Not yet," she said, her voice bossy and teasing. "I want to make this last."

She stood up, her eyes blazing with desire as she reached for Ruby's hand. "Come with me," she said, leading the younger blonde over to the TARDIS console.

Ruby followed, her heart racing as she wondered what Clara had in store for her. She didn't have to wait long to find out. "You're beautiful," Clara murmured. She sat down and patted her lap, indicating for Ruby to lay across it. Ruby hesitated for a moment, but then she laid down, her body tense with anticipation. Clara raised her hand and brought it down hard on Ruby's ass, leaving a red handprint. Ruby cried out in pain, but Clara didn't stop. She spanked Ruby hard enough to leave handprints all over her ass.

Ruby was crying now, her body shaking with sobs. Clara stopped spanking her and pulled Ruby's hair, forcing her to look at her. Clara leaned down and whispered in Ruby's ear, "good girl."

Ruby felt the brunette's hands on her hips, turning her around so that she was facing the TARDIS console. She felt Clara's breath hot against her ear as the brunette whispered in her ear.

"Bend over," Clara said, her voice low and commanding. "I want to show you how good it can feel to let go, to give in to your desires."

Ruby did as she was told, bending over the console as Clara reached for something from beneath the console. She turned to face Ruby, a wicked smile on her face as she held up a strap-on dildo.

"I'm going to make you scream with pleasure," Clara announced with a cheeky grin. Ruby whimpered, her body trembling with anticipation as Clara approached her. She felt the brunette's hands on her hips, pulling her back as the dildo pressed against her entrance. Clara pushed inside, her thrusts hard and fast, making Ruby cry out with pleasure.

Clara started fucking Ruby roughly, her hips slamming against Ruby's ass. Ruby cried out in pain, but Clara didn't stop. She simply yanked the blonde's already messed up hair and fucked her harder, her body shaking with pleasure. Ruby's eyes were watering, her body trembling with the force of Clara's thrusts. She could feel her eyeliner running down her face. Clara laughed as she smacked Ruby's sore, red ass again, making her yelp.

Ruby screamed out a stream of expletives as her body exploded into violent, messy orgasm. Clara stepped back, panting slightly, to admire her work. Ruby lay there, her body trembling and her eyes glazed over. Clara smirked. "Not bad," she teased. Clara kissed Ruby gently. "Fancy a trip?" Clara asked, already flicking switches on the console around Ruby. She glanced back over her shoulder at the exhausted, naked blonde and winked: "I know where to find the best sex dungeons in the universe. You'll love it." She pulled a lever and the Tardis took off before Ruby could even answer. "Wow…" was all she managed to say.