Engine thrumming underneath his armour, Megatron carefully didn't smile. Neither at the way Orion curled his hand around his hip, nor at the challenge in his question.

It was pretty delightful how quickly these things were being stirred out of the smaller mech with just the opportunity for them to do so, and it wasn't just (in a way not at all) thanks to Orion's massage that Megatron found himself in a humming heat and moving at the slightest indication from Orion despite just earlier having pushed back.

"Basically, yes." Despite having resolved not to smile, Megatron heard the heat in his own tone, and, beyond that, managed to only just stay properly still and not arch into the teasing slide of Orion's polishing as it finished above his aft.

His optics still being offline and the darkness that created, as well as Orion's earlier displeasure and approval both reminded him now to stay still.

And that, as much as the polish, if not even more so, dropped his engine into a deep idling purr along with the charge wrapping around his circuits.