Disclaimer: The characters of Doctor Who. aren't my creations and I therefore make not a penny from writing about them. Woe is me.

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There was a sudden, tremendous gust of laughter from the TARDIS library. The Doctor, startled, made his way inside, to find Sarah at the library console, doubled over in the chair, howling so hard with mirth that tears had begun to run down her cheeks.

"Sarah? What did you do, find the Wodehouse collection?"

She gasped for breath and tried to look at him, but the moment she saw his face she fell into hysterics again. In her condition, there was simply no way she could speak.

He flipped back his errant scarf and strolled over, leaning across the console to see what he might find.

She'd been listening to a Gallifreyan recording -- a legislative session of the High Council. "This? This!?" He'd endured endless Council sessions and never smelt even the faintest whiff of humor. He would quite literally rather have watched paint dry. "Sarah, are you all right?" He began to wonder if she'd been adversely affected by so much time travel. He felt her forehead; hot as she always was but normal enough, for a human. She had been recovering but his concerned gesture made her collapse with laughter again.

"No Doctor, I'm not ... sick ..." she said, between giggles and gasps for air, "I was ... listening in the ... original Gallifreyan." She let out another spurt of laughter. "I wanted to actually hear your language --"

"And you found it that amusing, did you?"

The look in her eyes said that she knew better, but she couldn't stop. She never could; it was why he so often had to rescue her.

"No, but ... there was one word I was," she choked, "curious about. So I ..." she had to take a moment to try and get herself under control. "I asked the computer to translate ... and ..."

His jaw suddenly dropped in awful realization. No, she couldn't have learned that. No, no, no. "And ...?"

"Is it," she giggled, "true that ... hahahahahaha ... that on Gallifrey... hahahahahahahaha ..."

"Yeess?"

"that 'Time Lord' is pronounced ..."

"Yes, it is. It is pure coincidence. I'll thank you not to mention it again!" He wheeled and stomped out of the library as Sarah giggled uncontrollably to herself.

"'Time Lord'..." she howled after him, "is pronounced ... 'Rotten-Git'!"

In the console room, the Doctor pounded in new coordinates. They'd go to old Elysin, to attend the grand Festival of Spring. Not that Sarah deserved it. He could still hear laughter from the library as he slammed down the dematerialisation control.

He knew he should have put a lock on that door.