Another scrape down the closed, if now nearly vibrating panel, and Megatron very carefully kept from smirking. Ignoring the kick that harmlessly bounced off his shoulders and tread-mounts, he couldn't help but notice in connection to what had made Optimus kick. Or his engine rev.

He was uncertain whether that spelled good or bad, but was still (arrogantly) sure he'd manage to bring Optimus around in the end.

Perhaps, though, it was better to stop talking outright, and instead he merely closed his mouth over the upper part of the housing and hummed, flicking his suddenly lightly charged tongue against the panel.

Very close now.