A/N First of the theme chapters; BUMBLEBEE! Theme: Fluff. This is better than last time; I know you guys will love this ;D XDDDD

Having already been ground-bridged back, Smokescreen wandered the Autobot base. He thought to himself how he was going to do the intended plan…get every mech to frag him…hmm…he lifted his optics.
The first Autobot he saw was Bumblebee. A plan forming in his head, he strode toward him, trying not to look too obvious.
"Hey Bee. Planning anything today?" He asked casually. Bumblebee looked up.
"No, why?" He bleeped cautiously.
"Nothing. But can you come to my room for a cycle or two?" Bumblebee shrugged, and followed Smokescreen into the berth-room.

At the entrance, Smokescreen suddenly stopped.
"You first," He said, gesturing. Bumblebee gave him a skeptical expression, then stepped foot into it. "Okay…" The lights were only at 15% intensity, making the yellow mech wonder. He started to say, "Smokescreen, why is it so dark?" But hadn't gotten far into the sentence when he heard the door slam shut behind him and strong servos told hold of his sides. Squirming against the grip, Bumblebee yelped. Then he began yelling for help, but one of the servos lifted to clamp over his mouth.
"Relax, kiddo. It'll only be for a few kliks," Smokescreen whispered breathily in his audio. Bumblebee's venting caught in his throat as he felt something warm and wet against his neck. With a jolt, he realized it was Smokescreen's glossa. The young Autobot struggled desperately against Smokescreen's grasp, whimpering pitifully.
"Aaah! Let me go!" Bumblebee shrieked.
"I can't explain it right now, but I have to do this. It's important." Smokescreen growled back between clenched denta. Bumblebee thought he was going to get a good spiking after this, but to his surprise, Smokescreen let go of him and sat up on the berth. "Come on," Smokescreen coaxed. "Get on me." The young Autobot was about to turn and run out of the room, but something held him in place. Whether it be Smokescreen's steady gaze or a hidden lust, he didn't move.
With legs of jelly, Bumblebee stumbled forward towards the other mech. Smokescreen smiled. "That's it. Don't be shy,"
When he got close, Smokescreen reached out and grabbed one of Bumblebee's shoulders, tugging him close into a kiss. Bumblebee was shocked out of his mind, he couldn't move. He just sat there, awed by the sudden move. Smokescreen continued pulling Bumblebee onto him, grinding their crotches together, making it obvious he wanted to frag. Bumblebee whined softly.
Finally, Smokescreen let Bumblebee go from his grip. Bumblebee started to wince in preparation of the spiking that was soon to come, but nothing came. When he opened an optic, Smokescreen was still staring at him expectantly.
"A-Aren't you going to frag me?" Bumblebee stammered from on top of the larger mech. Smokescreen blinked, looking genuinely surprised. Then he chuckled.
"No, it's the other way around. You frag me. It's part of the deal," He answered, and seeing the look on Bumblebee, he quickly added, "It's a long story, and there's no time to explain. Just get on with it!" Hearing a click, Bumblebee looked down. Smokescreen had retracted his interface panel. He shivered a bit before trying to do the same. He found he couldn't.
"I-I can't. Sorry," Bumblebee buzzed his apology. Smokescreen did not look amused. To Bumblebee's surprise, he placed a servo on Bumblebee's panel, starting to slowly slide it open. When it was fully open, Bumblebee writhed, feeling helpless, vulnerable, and bared.
Then the other Autobot went as far as to gently take hold of his spike, easing it closer to his valve until they touched. With that done, he let go and put both servos on Bumblebee's hips, and with one fluid motion, pulled them down, shoving Bumblebee's spike down his valve in the process.
"Do I have to do this all myself?" Smokescreen laughed as he watched Bumblebee start to quiver. "What, still feel unnerved? Okay, here, start taking off my armor." He grinned. Bumblebee twitched a little. Take off Smokescreen's armor?
"Why?" He asked.
"Trust me; you'll understand once you do it." Warily, Bumblebee lifted a servo and took hold of the edge of Smokescreen's chest armor. He pulled it off, setting it aside. He unconsciously drifted back from the sight of Smokescreen's protoformed torso.
"I still don't understand."
"Just keep going," Smokescreen urged Bumblebee.
Soon, Smokescreen's entire upper body was exposed to Bumblebee. Bumblebee hadn't noticed, but as he took it off, bit by bit, he started to grow bolder. "Frag me," Smokescreen stated blatantly. With a pang of shock, Bumblebee realized that his spike was still embedded in Smokescreen's valve.
"Oh, sorry!" He blurted, drawing back his hips quickly. His spike was noticeably well lubricated.
"Nice," Smokescreen commented, optic ridges raised a little. "This is going to be fun," Bumblebee blinked, laying down fully onto Smokescreen after having been slightly hovering over him. Warmth radiating from the exposed wiring engulfed Bumblebee pleasantly, making him a little more eager to rub onto him. Smokescreen took hold of Bumblebee's waist as the smaller mech began a steady thrusting rhythm, leaning forward into a deep kiss. Bumblebee spread his legs over Smokescreen's, his servos on said Autobot's shoulders. The interface was starting to get more enjoyable for both.
And as the room grew darker still, the light giving out slightly, their energon lines and optics seemed to glow brighter, strengthening the sensual halo around them.
Smokescreen started to moan deliciously as Bumblebee trailed his servo across his thick, bare chest. Bumblebee liked the response. So he began attacking sensitive cables under his armor, trying to get a good reaction. Smokescreen started to curl inward, sensual feelings rippling across his body, traveling to his groin. Overload tried to seize him…
"Oh, Bumblebee…" Smokescreen mumbled, optics closed. "Harder…"
Bumblebee easily obliged, starting to really love this. Overload trying to escape Smokescreen sent pleasure/pain pangs coming from his crotch area.
At last, the larger Autobot collected enough strength to lift up off the berth enough to bring him to Bumblebee's neck. He started licking and kissing the delicate wiring, pulling Bumblebee onto himself. Also, he reached out with his servos to stroke Bumblebee's car door 'wings'. Bumblebee shuddered happily, increasing his own attempts to make Smokescreen overload. At last, Smokescreen gave a drawn out cry, transfluid spraying out of his erected spike hard enough to make the yellow mech start to come off him with the force. Bumblebee finally overloaded as well, whirring loudly. Transfluid ran freely even when they finished, drenching their abdomen, crotch, thighs, and hips, pooling onto the berth, and then dripping of the sides.
They both panted, optic to optic after their interface. "S-So…have you ever spiked anyone before?" Smokescreen murmured.
"Actually, no…" Bumblebee responded quietly. Smokescreen blinked, and then smiled.
"Wow…that's shocking. Your performance was awesome. I look forward to our next session," Bumblebee beamed.
"I do too," He agreed. Bumblebee clambered off of Smokescreen, trying to wipe off the remaining transfluid from their overload. The yellow mech watched intently as Smokescreen got to his pedes and took hold of his armor, intending to put it back on. "Stay protoformed," Bumblebee advised. "You look better that way," Laughing, the mech turned his gaze to look at Bumblebee.
"You really think so?" Bumblebee nodded, placing a servo on one of Smokescreen's headlights and stroking. Smokescreen put a servo on the back of Bumblebee's helm and pulled their lips together, sinking into a kiss. Their optics closed, both their engines purring softly. After a time that seemed like an eon, they broke their glossa's hot dance and parted their faces, still looking at each other dreamily.
"It was worth it," Bumblebee commented as Smokescreen put his armor in place.
The larger Autobot could not agree more.

A/N Of course, it's kind of a new thing for Bee. Smokey "teaches" Bumblebee...kinda. Well, BB knew, but Smokescreen encouraged him to...whatevs. Review! BTW, Bumblebee's speech is in italics. I don't think I'll do much other than that.