He'd have laughed, really he would have, but instead he just grinned as a minute shiver worked itself through his frame at Orion's tone of voice and the flare of his field. This was just a tiny, very tame beginning, but it wasn't any less enjoyable.

Perhaps more so, since Orion was (both surprisingly and unsurprisingly) directing attention to him, in both the expected ways and, with this sudden turn to grooming, somewhat unexpected too.

And then Orion spoke, and Megatron stilled. He tilted his helm slightly, briefly meeting Orion's optics when the mech looked up and then he nodded.

"Understood." There was a rumble in his voice as he spoke, and his engine underscored it. Not from annoyance, merely something like anticipation and acceptance, the words, his own agreement and the implication running like fresh charge down his circuits.