Written for the Stargate Drabble List Riddle Me challenge – the answer was Yo-Yo. Naturally that's Jack! Side note: the terminology used in this is real… alas this also means I went to the effort to find it. I have no life 

The Care and Maintenance Of…

"See, at first I thought it was my CB's that needed replacing."

"CB's?"

"Ceramic Bearings. Are you even listening to me?"

Daniel looked up from his translation at the boots perched on the end of his work bench. Which of course were connected to the legs, connected to the body of Jack O'Neill, one bored USAF Colonel, who was rattling off some useless diatribe on a topic Daniel had no idea on. "Sure," he said with a forced smile.

"So, Siler took a look for me, pulled it apart. Man really knows his trade. Anyway, he tells me, nope, gotta check out the BPT first and if that doesn't work it could be the Centrifugal Clutch."

Well that got Daniel's attention. Jack used a big word.

"Centrifugal Clutch?"

"The return mechanism."

"I have no idea what you're talking about, Jack."

"It's either the BTP or the Centrifugal Clutch that's causing the problem."

Daniel stood and patted Jack's chest.

"Hey!" Jack protested. "What was that for?"

"Just checking to see if you were wearing, you know, one of those mimic devices."

"Why?"

"Oh, because you look like Jack but sound like Sam, wanted to be sure."

"You really haven't been paying attention, have you?"

"Not really," Daniel said turning back to his translation. "You lost me at BPT."

"Brake Pad Technology."

Dropping his pen, Daniel heaved a sigh and spun to face him. "Okay, you got me Jack, I'm all yours. What the heck are you talking about?"

Jack held his hand up high and let his yo-yo unfurl on its string. "My yo-yo, its broken, wont wind up anymore."

End