Jack and Daniel arrived at the base a few minutes later, walking swiftly through the base security checkpoints. Almost instantly, they were herded to the briefing room where Jack and Sam faced each other.

"What'd you do, Carter?" Jack asked.

"What'd I do?" Sam responded, hotly.

"That's 'what'd I do, Colonel?'"

"Oh, so rank goes with one's mind? Or body?" Sam countered.

"Sir?" She asked, turning Jack's lean frame toward the general.

"Let's disregard ranks right now, Colonel."

Sam turned a triumphant smile upon Jack. "Yes, sir."

"Oh, for cryin' out loud!"

"That's enough, Captain." Hammond shouted on impulse.

"Uh, General...I thought you said we were dispensing with ranks until this is resolved." Daniel said.

George Hammond had never been this confused before. "Oh, what the hell! Call them whatever you like- just leave me out of it." Then, he did what he had never done before- he retreated.

"Great. Now what?" Sam asked. "I have a briefing with SG-7 about the singularity on Hanka at 1430 hours. Can't do it like this! They'd disregard everything I'm saying- thinking it's some kind of prank."

"I can handle it, Carter. Don't freak."

"You- handle a breifing about a black hole singularity." Sam said, disbelieving. "I'll believe that when I see it."

"Hey, Carter! I'm a closet astronomer. Black holds through a telescope are right up my alley."

He received blank looks from Daniel and Sam. Teal'c stood, stoically watching the proceedings while one eyebrow was raised in skepticism.

"What?"

"I do not believe that you possess all of the knowledge that you will require, O'Neill."

"So? I'll just read Carter's report. Don't worry, I'll be fine."

"Sorry, sir, but you'll forgive me if I'm not quite as confident as you are."

Just then, Dr. Janet Fraiser walked into the briefing room. "General Hammond said there was an emergency."

She watched in fascination as Sam's body made motions that didn't suit her personality at all- at least not her old personality. "I'll say! Carter doesn't think I can handle debriefing SG-7 about black holds or something about that..."

"Sir, with all due respect, maybe I should write out a script or something."

"Did I miss something?"

"This is your emergency, Doctor." Daniel said, raising his eyebrows and giving his trademark 'isn't this a fine mess' grin.

"Captain Carter and Colonel O'Neill have exchanged outer appearances, or so it would seem." Teal'c suppllied.

Janet raised her eyebrows. "Tell me this is a bad April Fool's prank." She said, rubbing her temples.

Daniel shook his head, his eyebrows still raised. "Oh no..."

"Well, let's get you two to the infirmary."

"Now, Doc. What's a needle in my butt gonna tell ya that you don't already know?" Jack asked.

"I don't know, but I'd at least like to look at your EKGs and run a few other tests and scans. Maybe then, we'll be able to figure out what happened."

"Yeah right."

"That's enough, Colonel."

"See, at least she got it right!" Jack muttered, passing Sam as he followed the doctor.