#thinking about sensory slime transfluid again

[neighboringheart]

woke up with a fever which means more canceled plans bc my body doesn't let me do fucking anything anyway minimegarod (or megarodimags? it's Mags in this scenario) breeding kink shit on the brain

picture it with me Rodimus strapped to a breeding contraption (I know it's got a name but I'm too tired and ill to remember rn) that keeps him comfortably laying on his front legs spread and valve bared but he's also strapped down so he can't escape even if he wanted to but they've been planning this for weeks so he's already dripping

Magnus playing the role of Rodimus' owner soothing him and telling him that he found the perfect stud to breed him until he's round with strong newsparks (which not possible in this scenario but he's saying it for Roddy's sake) and Rodimus whimpering and squirming like he's nervous until he feels huge warm servos land on his hips and a fat spike nudge his valve

Megatron grinds against his folds for a moment and it's the only warning Roddy gets before he's pressing in and spreading his loose walls wide around the plentiful ridges that adorn his shaft

for the sake of extra weird details Megs is also wearing a removable set of fake balls that Rodimus loves for the way they smack against his node with every rough thrust and it only makes the fantasy feel more immersive as though he actually could be bred which just makes him pull harder against his restraints trying to fuck himself against Megatron's fat spike

the final icing on the cake is the way Roddy gets more and more desperate as he feels Megatron's knot slowly inflate and bump against his entrance

Magnus will hold his face and pet him gently telling him that he's being so good and that he's gonna be full so soon and then he can rest and be pampered just like the rest of the carriers taking spike whenever he needs it

the knot is roughly shoved into him and he overloads drooling as he feels his valve filled with a thick flood of transfluid

it lights up every node he has and makes him feel weightless his walls stretching to hold it all and when Megatron's hips twitch trying to get just a bit more friction the way it sloshes rips a broken moan from his vocalizer

there's just so much and it feels so good clinging to every inch of the inside of his valve

he's barely cognizant as Magnus carefully wipes over his body waiting for Megatron's knot to deflate but when Megs finally pops it out Roddy's eyes go wide as some of the viscous cum squirts out of his valve sobbing as more tries to dribble out of him

how can he be a good carrier if he can't hold all that he's given what if it doesn't take

but Magnus is swift to scoop up whatever is dripping down his thighs and pressing it back into him easily sliding a plug into place that locks every last drop inside steadily pulsing charge to keep Rodimus calm

and if Magnus decides to commit a taboo and fill up his lovely bitch's aft port with a fat load of transfluid of his own who's to know

Rodimus certainly wouldn't tell anyone even if he could