Parasite
The idea for this drabble came to me very suddenly, and it was so ridiculous I had to write it.
Pretty much just crack, set pre-movies when Starscream was a youngling. Again. I guess the "Little" in "My Little Lover" has to come from somewhere ;)
"RAAAAWWWWRGHH!"
Before Megatron can turn to see what on Cybertron Starscream is screeching about, the youngling has launched himself at the Lord Protector's back, newly developed thrusters catapulting him against silver plating. Tiny claws dig into armour (too small to be painful), and Megatron blinks in confusion before he realizes that Starscream is staying there. The silver mech shrugs, trying to dislodge the miniature flier, but the Seeker doesn't budge.
"What in Primus' name are you doing?" Megatron asks, and in his surprise he cannot quite find it in himself to yell at the youngling.
"Shhh! I'm being a Scorponok! And you're Blackout!" Starscream whispers conspiratorially.
Megatron grimaces - he has an important meeting with Soundwave in minutes, and he does not have time for this slag. "Starscream, why are you not with Thundercracker?"
"Skywarp said he'd give me candied energon if I left him and Thundercracker alone for a while," he replies innocently, scrabbling around to get a better hold on Megatron's plating. A talon manages to catch a stray wire, and the older mech grunts in discomfort. "Now shh! Pretend I'm not here!"
Perhaps, if he's lucky, nobody will notice Starscream. Perhaps, if he's lucky, Skywarp will die a sudden, painful death in the next ten seconds, and Thundercracker will resume his duties as caretaker.
"Starscream; on your back. Query; shall I remove youngling?" Soundwave drones, the instant Megatron is in view.
The silver mech sighs, and buries his faceplates in his hands. "There is nothing on my back," he grumbles, and Starscream stifles a happy giggle. Despite his visor and battlemask, Soundwave manages to look surprised. "There. Is. Nothing. On. My. Back," Megatron repeats through gritted dental plating. The Communications Officer nods and apologizes, visor flashing with sudden understanding.
On the other side of the conference room, Scorponok peers over Blackout's shoulder to investigate the new 'symbiote'.
