Disclaimer: I do not own Doctor Who, nor am I gaining any money with this story.
Jack Harkness had found him again. At least, he thought so. As Jack stared at the fez-wearing wierdo on the lounge chair, a strange look crossed his face.
"Jack, it's been a while. Aren't you even going to say hello?" the man in the fez asked.
"Doctor?" Jack asked in reply. "What is that on your head?"
"It's a fez. Fezzes are cool!"
Jack laughed at that. "So, Doc, I assume you aren't just here to show me the weirdest outfit I have ever seen?"
"It is not weird, it is cool!" the Doctor protested. "Anyways, you are correct. I am here to show you just why your precious vortex manipulator is obsolete!" Saying this, the Doctor waved his hand in front of Jack's face. Jack noticed a silver ring with circular Gallifreyan written on it.
"Nice ring, Doc. You engaged?"
"Don't be ridiculous. It's a-"
"Time ring," A man walked up behind the Doctor, interrupting him. Guess who it is?
"Ah. Righty-o. Geronimo!" Said the Doctor closer to Jack, suddenly disappearing into a cloud of smoke.
"The time ring is a device invented by the time lords for single-person vortex travel. Runs via telepathic circuit," the other Doctor explained to Jack. He opened his mouth the start talking again, but then River Song materialized.
"Jack, sweetie, here is your vortex manipulator back. The Tardis gave me a time ring of my own," River told Jack as she gave him a vortex manipulator.
"Thanks, sweetheart," Jack replied to River.
"Stop flirting with my wife, Harkness!" The Doctor looked considerably angry now, and just looked angrier when Jack starts laughing.
"Wife... Doctor, you crack me up..." Jack stopped laughing as he noticed how angry the doctor looked. "Wait, you mean... Are you actually...?" He looked at River, who looked quite smug. "Uh oh." could be heard from Jack's mouth as he ran away from the Doctor, programming the vortex manipulator as he ran. He dissapeared in a burst of light, scared.
"Get back here you-" the Doctor started to say, being interrupted as he dissapeared, carried away by his time ring after Jack, his fez falling off his head as he dissapeared.
"What? What? What." Came a voice from the shadows, with the last 'what' being quite flat. "What does he mean, wife?" Asked the 10th Doctor as he stepped out of the shadows.
"Spoilers, sweetie," said River with a giggle as she picked up the fez, tossed it into the air and shot it. She then dissapeared into a cloud of smoke.
Ten just stood there, his jaw hitting the ground.
This was my first fanfic, so sorry if it was absolute trash. And yes, the time ring mentioned here was controlled by a telepathic circuit. If you recall, even technology as obsolete as the Doctor's Tardis ("Sorry, Old Girl.") from Gallifrey had telepathic circuits.
And remember, the review button is your friend. C'mon, it doesn't bite.