A/N: This one's from Canti Sixx. Enjoy!

Megatron x Optimus Prime (TF:A)

"Slippery When Wet"

"Bumblebee? Bumblebee, where are you?"

It had been countless cycles of searching for the yellow-and-black mech. One would assume that locating such a brightly colored youngling would be no problem whatsoever.

Hell, Optimus would assume no different. Of course, his assumptions were all changed at this point. Bumblebee was nowhere to be found. But, he didn't give up.

"Bumblebee," the Autobot called the 'bot's name for – what – the thousandth time? Prime's optics scanned every which way and direction. "Where could you have run off to?"

And at last, he heard something.

His audio receptors perked, identifying the sound.

Running water?

Why would Bumblebee be showering in the middle of the day?

Optimus Prime pushed the question from his processor, making slow strides down the empty corridor. His blue optics fixated set sights for the wash room and his audio receptors remained perked at the sound of the running water. In the mere time of half a cycle, he was before the door, lifting his servo to knock against it. He stopped.

"Hmm," he hummed to himself and arched an optic ridge.

The door was cracked.

Hesitantly, Optimus eased his shoulder against the door. A cloud of warm vapor washed over his form the moment he entered, and the sound of the running water only grew louder. He lifted his blue optics upward, ready to meet Bumblebee's optics…

But, no. They were not Bumblebee's.

Hell, it wasn't even Bumblebee.

These optics were red – blood red. They glowered and slitted at him.

Optimus Prime stared into Megatron's optics, quickly stepping backwards to advance back to the corridor. But, the Decepticon's voice halted him.

"You're the last I expected to barge in here," he spoke lowly. "What do you want?"

Optimus couldn't render a response. He was distracted by the sight in front of him, the beautiful sight right before him…

He watched water rush from a faucet and rain down on the Decepticon's broad form, sliding down such smooth, grayish alloy. His servos twitched, aching to feel Megatron's soaked chestplate, aching to massage the 'Con's entire form with those soap suds. And to kiss the Decepticon under the running water …

Megatron stepped back in slight discomfort. "What is it, Autobot?"

The words jolted Prime from his little fantasy, and he stammered.

"…N-Nothing," he lied.

"You're not telling the truth," Megatron was no fool.

Optimus' optics rounded and drooped, sort of an equivalent to blushing. He looked from Megatron's optics and shook his head.

Primus, this was awkward.

"…It's really nothing."

"Tell me, anyways…"

Great. Megatron was interested.

Optimus laughed weakly. "I-I was just…" He shrugged. "…imagining things."

Megatron arched an optic ridge. "What things?"He leaned his shoulder against the wall.

"…I would have to show you." Prime smiled faintly.

There was no smile in return from Megatron. "…Show me," he insisted with a small nod, watching Optimus began to walk before him. "However, if you try to harm me, Autobot, you know you will not succeed."

Prime shook his head. "It's nothing like that." A pause and smile. "I promise."

The 'Con's expression remained solemn.

All of that would change in a matter of cycles.

With his ventilations quivering in utter eagerness for what lay ahead in the mere cycles to come, the Autobot situated his servos against the Decepticon's broad chestplate, his digits proceeding to claw into the thick alloy. The massaging grew deeper, deeper, and deeper, until the moment occurred where Optimus could sense every excited thrum of the 'Con's spark. His own accelerated, eager inside its chamber.

"Ohhhh," Megatron moaned, biting his lip. "Mmmm…"

Prime grinned. "Feels good, doesn't it?"

Another groan.

The warm water continued spraying unceasing downpours upon the two mechs, slickening their frames. Megatron grew weak on his stabilizing servos due to such a sensation, bending his knees until he met the slick flooring. He spread his legs wide, granting an entrée to Optimus. The Autobot moved between the 'Con's legs and continued massaging, sitting on his knees, sliding his servos to his shoulder panels.

"Mmmm," Megatron hummed in utter bliss, clawing softly at the floor.

Quite frankly, Optimus had no idea what he was doing, but apparently, it was no matter. The Decepticon was melting under his servos, adoring the feeling of Prime's servos against his alloy, pressing in and out of his body.

"Deeper…" Megatron breathed.

Optimus obeyed, pressing deeper. The 'Con shuddered.

"Excellent."

Megatron snuck his servos to Prime's back and pressed the Autobot against him, lying down on the wet floor. Optimus made a soft sound of surprise, then smiled warmly, easing his chassis against Megatron's. He chuckled.

"Mmm, I hate to tell you I told you so, Megatron," Optimus murmured, grasping the 'Con's shoulders. "I promised I wouldn't harm you. You didn't believe me…"

Megatron's thick arms wound around Prime's frame, and a servo slid to hold the Autobot's skidplate. He laughed softly. "It's in my nature to never trust you Autobots," he spoke lowly.

Prime flashed a smile. "I'm taking it you're not persuaded. You don't trust me."

A grin in return. "Not yet."

So sly.

Optimus slid forward in the 'Con's embrace, slipping his arms around the mech's thick neck. With a gentle push, he preceded Megatron to lean his head forward, and the two closed their optics. Their chestplates pressed deeper, and a wonderful sensation seemed to crackle between their sparks, a sort of hunger for a closer intimacy. The Autobot's frame shuddered as Megatron breathed into him and his spark accelerated inside him.

They were closer.

Closer, closer…and they met.

"Ohh…!" Optimus gasped. "Mmmm…"

The tip of the Decepticon's glossa grazed Optimus' bottom lip and soon slipped into his mouth, skimming the Autobot's glossa oh-so-lightly. Optimus emitted a low groan as he tilted his head to a side, parting his lips further. Megatron massaged his glossa against Prime's, passionately kissing. He pulled the mech deeper into his chassis. Their sparks flared inside their chestplates, fluttering.

Ohh, the hunger.

"M-Megatron," Optimus mustered to breathe, his arms constricting tighter. His digits slid to the nape of the 'Con's neck, stroking oh-so-lightly. The soft laughter Optimus emitted reached Megatron's audios, and the Decepticon joined in, releasing low chuckles beneath his stifled groans.

It felt so good. It all felt so good.

Megatron didn't care if Optimus was an Autobot.

His hate for the enemy faded, emerging as a newfound affection.

Megatron's sensitive circuitry quaked at the intimate fondling, and cold shivers snaked down the Decepticon's wiring. Megatron trembled and pulled Prime closer, his digits digging deeper into Prime's back panels. The Autobot stifled a groan beneath his excited ventilations.

"M-Megatron," his breathy plea. "Easy."

The 'Con only moaned and leaned his head further back against the wall.

Such a bad move…Tsk, tsk.

Optimus slid forward, his lips parting before Megatron's thick neck. At first, the Decepticon felt nothing, but excited ventilations from Prime's mouth. Each tiny breath made his systems snake with shivers, and the sense only grew worse mere astroseconds later. Optimus began nibbling at the nape of his neck, sliding his glossa forward to taste the water that had slickened Megatron's entire form. The water trickled into his mouth, over his glossa. Megatron moaned, clawing for mercy, his form shuddering.

He slid his servos against the grill of Megatron's stomach, tracing every little groove and contour with the tip of his digits. His wet servos moved to the mech's sides, his hip compartments, the tops of his thighs…

"Aaahhh…Mmmm," Megatron bucked away a little as Optimus moved between his thighs. "Ohhh…"

"Mm-mmm…" Optimus shook his head.

The Autobot's digits stroked at Megatron's crotch, fanning out to brush the moistened alloy so deeply. The 'Con made no attempt to stifle away a loud groan, sliding his large servos to Optimus' wonderfully shaped backside. Every curve glided so perfectly under his palms – too perfectly –. The curve of the Autobot's metallic spine arched so beautifully, his shapely aft…Megatron stroked it, he stroked it all, leaving not one inch uncovered.

Optimus smiled inwardly. "Ohh, Megatron…" he laughed softly.

Megatron's ventilations rushed as Optimus refused to stop his stroking, his systems on the brink of overload. The Decepticon

"Arghh'…" he groaned. "Blast you, Autobot."

Optimus laughed.

The Decepticon opened his blood red optics and watched the Autobot plant quick, tender kisses from his chin to his chestplate. Prime's lips lingered on a kiss against his spark chamber, and his blue optics lifted to Megatron's faceplate, round in desire.

"Pl-Please…?" he pleaded.

Megatron rumbled a low sound of consideration. "I'm not so sure…I'm not yet persuaded."A smile and a playful chuckle emitted from Megatron.

Prime smiled back, stroking Megatron's spark chamber. The compartment gave way beneath his finger tips, exposing a wonderfully blue lifesource. It was pulsating wildly, excitedly… eagerly. It was ready.

The Autobot grinned. "Once this is over, Megatron," he murmured, revealing his own spark. "You will undoubtedly be persuaded."