Disclaimer: If I owned them, Sunstreaker would mutiny within an hour.

Author's Note: Because as much as Prowl wouldn't enjoy it, Sideswipe would.

- Sideswipe's Excellent Morning After -

Sunstreaker slowly came back online, aware of something cuddling up against him. That puzzled him, and he frowned as he tried to rid himself of the haze left from over-charging the night before and figure out what, or who, would be cuddling up against him. His CPU brought up the image of a red and white femme, and he flipped his optics on it surprise - a femme, on earth? Glancing over, Sunstreaker found it was true, and that only confused him more, so he reached out to Sideswipe, hoping his twin could explain.

When his reaching stopped at the femme currently snuggled up next to him, memory came flooding back to Sunstreaker, and with a startled yelp, he jumped away from the 'femme', only to be stopped by the wall. He was on the inside of the berth, with no way to get out except over - Sunstreaker's CPU stuttered at the thought - Sideswipe. Fortunately, Sunstreaker's yelped had woken the red femme. She stretched lazily, optics flicking on half-way through, as Sideswipe usually did, and then looked at Sunstreaker curiously.

"Problem, bro?" Sideswipe asked curiously.

"You - you're - wha - how -" Sunstreaker stuttered, very determinedly keeping his optics on his twin's face.

"Femme frames don't generate as much heat as mech ones." Sideswipe said with a shrug. "So I figured I'd just leech off your heat." Sunstreaker continued to stare at her, and she gained an irritated look. "What? We've shared heat like this enough times as mechs when it was cold!"

"Yeah - as mechs." Sunstreaker latched onto that important fact, and Sideswipe frowned, then unexpectedly grinned.

"What, does me being a femme somehow make it...wrong or something?" the red femme purred, shifting position languidly as she eyed Sunstreaker. The yellow warrior scowled, knowing Sideswipe was enjoying his discomfort.

"It just makes it a little weird." Sunstreaker gritted out. "I'm used to having a brother, not a sister."

"And I'm used to being a mech, not a femme." Sideswipe said with an amused smirk. Sunstreaker squashed the thought that the expression looked kinda sexy on this femme version of Sideswipe. "I also had to spend the last two months trying not to stare at Prowl's aft and think how sexy it was. So believe me, I know weird." With that, Sideswipe hopped off the berth, and Sunstreaker warily came to sat on the edge as his twin leaned over the chair in front of their computer terminal to check her schedule for the day. Sunstreaker looked away uncomfortably as this gave him a nice view of Sideswipe's aft, and the red twin's previous comment made Sunstreaker start contemplating the view.

"Hmm, appointment with Ratchet first thing. Not surprised." Sideswipe mused from the terminal, and then chuckled, and Sunstreaker risked looking back, only to wince and look away again quickly as he saw Sideswipe still bending over the chair, but now giving him that same amused, sexy smirk from before.

"Could you...not do that?" Sunstreaker asked, shifting uncomfortably.

"Do what?" Sideswipe asked pleasantly, and Sunstreaker risked another glance, just to make sure his twin was in the same position before waving vaguely at it.

"That." he said.

"What, you mean stand here and smirk like I always do?" Sideswipe asked innocently.

"You're not actually a femme, Sideswipe, so I have no problem with hitting you." Sunstreaker said, glaring back at his twin.

"Go right head, I got a nice target for ya right here." Sideswipe said, wiggling her aft in invitation and grinning wildly. Sunstreaker groaned and let his head fall into his hands at the thoughts that spawned, and Sideswipe laughed. "Y'know what the fun part about this really is, though?" Sideswipe mused, and Sunstreaker grunted, not sure he wanted to know. Sideswipe took it as an inquiry, though, or just didn't care whether or not Sunstreaker wanted to know, and she continued, "I think I'm actually prettier than you as a femme." Sunstreaker's head snapped up, and for the first time, he did a thorough inspection of his 'sisters' frame and armour.

"You are not." he concluded with a scowl. "You're certainly still as dirty."

"Awww, Sunstreaker's jealoooous!" Sideswipe sing-songed, and Sunstreaker firmly pushed aside the weirdness of the soprano voice to deal with the taunt.

"I am not, it's just the truth." he said firmly.

"I'm prettier than you when I'm a femme, just admit it!" Sideswipe said with grin, standing and planting her hand on her hips.

"I don't need to admit it because it's not true." Sunstreaker said stubbornly.

"Oh really?" Sideswipe asked with amusement.

"Yes, really." Sunstreaker said, standing and stalking over to Sideswipe. "And you know why? Because, for a mech, I am perfectly proportioned, not to mention I wax and repair paint chips regularly. You're not to bad yourself as a mech, either, but as a femme - well, your shoulders are too broad, your chassis is too small, you have no waist, your legs are too thick and your arms too long. You look better as a mech than a femme, really." Sideswipe listened to Sunstreaker's rant with an annoyed expression, but far from arguing back once his twin was finished, the red femme took a step forward, so that she and Sunstreaker were literally chassis-to-chassis.

"Well, not all of us can be as perfect as you, Sunstreaker..." Sideswipe purred sexily, and Sunstreaker was sure that the way she said his name was illegal in the human country they were in. Then he became aware of his revving engine and heated circuits, and he jerked away with a curse.

"I hate you." he said viciously, pointing to his twin, and Sideswipe smirked.

"I should probably go see Ratchet before he gets cranky." the red twin said, then headed for the door, swaying her hips as she walked. "Y'know, I wonder how Prowl's handling things this morning, considering what she and Jazz were doing last night."

"GYAAAH!" Sunstreaker yelped as Sideswipe stepped out of their room. "Thank you so much for reminding me of that! I'd finally managed to block it out!"

"I know." Sideswipe shot over her shoulder with a smirk, then shut the door in Sunstreaker's face when he lunged at her. The yellow twin could hear her cackling all the way down the hall.

- END -