A/N: So I was watching this episode ("Trading Faces") the other day and because my mind is more capable of over-thinking than it was when these episodes first aired, this idea popped in my head. Because seriously, this would have been one of the main issues they would have had to face. I wrote them as their actual self, not the body they're currently in, so I hope that's easy enough to understand/read. If you've seen the episode, it shouldn't be too hard to follow.

Disclaimer: I do not own Jimmy Neutron or any of its characters.

"You better have good news, Nerdtron!"

"Not now, Vortex," Jimmy grumbled, trying to make it to his locker without toppling over.

"What...are you doing?" Cindy asked, watching him with confused eyes. "And why are you wearing my same outfit from yesterday? You trying to make me the laughing stock of the whole school?"

"I couldn't change," Jimmy said, clenching his legs even tighter.

"Why not?"

He straightened up for a moment, his current state forgotten and replaced by annoyance. "Because, Vortex! Changing involves showering and showering involves getting...you know."

Cindy scoffed. "You don't need to shower to change! I didn't! I got you dressed in the dark!"

"Well, that explains my mismatched socks," He said, pointing down at his feet. Cindy hid an embarrassed blush. "And why my hair is flat," Jimmy noted, flicking his now deflated tip of hair. He retracted just a bit then to re-clench his current body's legs.

"Seriously, what is going on with you?" She slapped his hand away from her current head and he held it between his legs. Cindy blinked. "Do you have to go to the bathroom?"

"No," Jimmy said, very visibly nodding his head.

"Well, what are you waiting for?" Cindy exclaimed. "My kidneys to explode?"

Jimmy sighed heavily. "I can't go to bathroom!"

"Why not?"

"Because..." He gestured wildly around Cindy's body.

"Oh, right."

Jimmy groaned in pain again. "W-what about you? You haven't gone yet?"

"Gross, no!" Cindy stuck her tongue out. "I haven't needed to since this whole freak show happened. But now that you mention it..." Suddenly, she clenched her legs in annoyance and groaned. "What are we gonna do?"

Jimmy tried to compose himself long enough to speak a full sentence. "We'll just have to make it through the day. I'll figure out the problem by tonight."

"Tonight?" Cindy exclaimed. "There's no way were waiting till tonight!"

"But Cindy-"

"Uh uh," She interrupted. "You get in there right now before you cause me some serious medical problems!"

"B-but what do I-"

"Just...just don't look down and try not to..." Cindy trailed off, not sure how to finish her sentence.

Just seeing a bathroom seemed to be enough for Jimmy, though, and he quickly rushed into men's room.

"Neutron!"

He peeked out and Cindy pointed to the bathroom beside it. "Oh...right." He managed a chuckle and headed into the "correct" door. Before going inside, however, he glanced back at Cindy, concerned. "What are you gonna do?"

"I'll...figure something out."

Jimmy disappeared into the bathroom and Cindy forced her vision downwards. "You are so going to pay for this, Neutron," She grumbled, stomping into the men's room.