Tag: Cybertronian smut

(1068 words of Twitch, my weird little minibot, riding Blackspark’s spike in a lab in order to get a sample of transfluid nanites. Ft. a mention or two of @crowoflight‘s char, Hotzone. No warnings, just some good wholesome smut. In a parasitology lab.)

“So, uh- no objections to this, y’know, happy to be of service, but why, exactly, am I- ooh.”

A table in a laboratory full of suspicious vats wasn’t the
sexiest environment, and, truthfully, Twitch wasn’t the sexiest partner. Those flat
camera-optics were weird, and his voice sounded like there was at least one radio
between him and the listener.  He was
nice, though, Blackspark liked him. And he certainly wasn’t objectionable to look at, just not within the range of traits
that Blackspark considered hot. Didn’t mean he wasn’t happy to offer his spike
when asked. And those clever little servos stroking along his inner thighs were
more than doing what Twitch’s
appearance wasn’t. Now- why were they doing this in a lab, again?

“Scoot back- there. Up, leg over my shoulder,” Twitch
muttered, lifting and tugging until Blackspark hooked one leg over his shoulder
as ordered, and teased his fingertips along the glimpses of pretty white
bio-lights it revealed. “Good. Well- Hotzone over there wants a look at how my
frame modifies reproductive nanites into repair nanites, and, for that, we need
some reproductive nanites to start with. And he’s a bit too big for me, you’ll
notice, but you aren’t. Open up.”

“Works for me. You sure yer okay, though? Don’t want me
stretchin’ you a bit better? I got vibe fingertips, y’know,” Blackspark
offered, wiggling said fingertips at Twitch, but opened his panels to release
his half-pressurized spike regardless. Twitch was the sort who knew what he
wanted, Blackspark assumed that was still the case in this- oh!

Twitch, in one swift motion, slid Blackspark’s leg off his
shoulder and lifted himself up, straddling the bounty hunter’s hips. Retracting
his valve cover, he immediately sank down onto Blackspark’s spike, then-

Blackspark’s initial surprise at the easy stretch of such a
small mech’s valve was immediately drowned out by startled pleasure as said
valve clamped tight around his spike and rippled powerfully, a sensation that
had his spike pressurizing fully in a couple of sparkbeats. Deeper into
Twitch’s valve, of course, which Twitch very much seemed to enjoy. Oh, right- mods, and, Primus, tasty mods. Blackspark outright laughed, servos curling around
Twitch’s sides, and slowly rocked up to bring the node prong above his spike
into contact with Twitch’s node. “Ah, Pit,
I like that- damn you are stretchy! And dear Pri-iiimus that feels good- tighten up ‘gain? Ah, yeah-“

That was what people tended to think of that trick, yes.
Twitch ‘smirked’ with a lift of his plating, rocking his hips more firmly
against Blackspark’s to take the larger mech’s entire spike into his valve, and
lingered where he could grind his node against that lovely prong. Mmh- oh.
Usually only toys had that, it must be a mod, and it was a nice one.

As requested, Twitch clamped his valve tightly around
Blackspark’s spike, then let his calipers settle into their usual rippling
motion- intended to draw a partner quickly to overload and then milk a spike of
transfluid. People generally approved. Blackspark seemed to be no exception, if
the crooked grin on his face was any indication. That, and the sounds he kept making.

Turning his optics away from Blackspark for a moment, Twitch
locked optics with Hotzone and winked, slamming his hips down particularly hard
to earn himself a gasp of pleasure.

Servos wrapped around Twitch’s sides, Blackspark crooned and
thrust gently but firmly into the pretty valve wrapped around him, playing with
how different thrust patterns felt against those rippling calipers. “Ah,
Twitch, this’s good-  Pit, I’d steal yer calipers if mine
weren’t already modded. Tha-at is
nice, lemme try- ooh-

Deciding not to bother with coherence, Blackspark settled
into the rhythm he’d found, thrusting almost in time with the rippling but a
bit faster. Twitch easily met his thrusts, so he thrust harder, helm lolling
slightly to the side and optics unfocusing in enjoyment. Twitch didn’t appear
to be in the mood for leisurely, so
Blackspark happily went along with the pace, his charge building quickly as the
calipers ripple-squeezed along his spike with every thrust.

Twitch’s mods included a set of sensors high up in his valve
that could detect charge, so, when he felt that Blackspark was nearing
overload, the entrance to his overflow tank opened wide and the first few rings
of calipers in his valve clamped down tight around the base of Blackspark’s
spike. Almost the same effect as a knot, and the combination of tightness and
continued squeeze-rippling tended to trigger a specific set of subroutines in
his partner.

It worked.

Blackspark overloaded, rather loudly, hips bucking up into
Twitch, and didn’t stop. Back arched, keening loudly, his frame doing its
absolute best to empty his transfluid tanks into Twitch’s valve. Tended to
happen when one triggered subroutines meant to satisfy, fill, and spark up a
partner in heat. His frame satisfied, Twitch overloaded as well, albeit much
more quietly, and regained himself before Blackspark had even pried his optics
open.

Chuckling softly, Twitch patted Blackspark’s chassis as the
bounty hunter settled down, helm cocked in an expression resembling a grin. “Settle,
tough mech.”

“…holy slag,” Blackspark chuckled, blinking until his optics
focused again, and rather dazedly patted Twitch’s sides in return. “That… oh, that is fun. Though… when y’ said y’
needed fluids, wasn’ think’n you’d wan’ all
th’ fluids. Not complain’n.”

Grinning crookedly, Blackspark watched Twitch lift himself
up, raising a shaky servo to pet over the minibot’s valve. Generic silver-blue,
with thick, plush, inviting lips, wet but not dripping nearly as much as one would expect- evidently his frame was keeping
the fluids inside. Outwardly not all that unusual, just pretty. A striking
contrast to his spike, Primus. That must be the original colors, and,
wow, people didn’t usually have spikes patterned like their transfluid might be
a biohazard. That was a bright shade
of green. “Sheesh. Tha’s somethin’. I like. An’ thought I saw some ridges or
somethin’, yeah? Might… haveta try tha’ out.”

“Well, I’m glad you approve. You are welcome to my spike after we’re done here. For now, prop
those knees up?” Twitch requested, moving up to plant his aft on Blackspark’s
stomach, and leaned back to brace his shoulders against vantablack legs-
splaying his own legs open to give Hotzone an extremely lewd view of his spread
valve. “I figure that oughta be enough of a sample.”

“You lemme know if’y need more,” Blackspark offered, sounding a bit drunken, and licked his lips where Twitch could see. “An’ lemme know if’y need cleanup help.”