Well, if that wasn't impressive, he wasn't sure what would be. Megatron outright laughed against Optimus' throat and leaned up to bite the chin guard, scraping his teeth along an edge. He'd certainly love to see what the mech could do when let loose... But, that would have to wait until after he'd done his.

It felt important, to do it soon. If it went horribly wrong, he could always blame it on their connection and partnership still being new. He didn't believe he'd had to resort to that, but if he needed to, he could.

"It's a pity I didn't feel up to spiking you, hmm?" Megatron said with a chuckle against Optimus' jaw, his tone faintly mocking... in a teasing way since he could recognise that such movement would have been maddening had he been spiking Optimus. His finger, however, was obviously not getting much out of it. Wriggling his certainly still-charged finger against the twitchy caliphers, Megatron let the current on the surface plating of his finger ebb... and then pushed it up again, slightly stronger than before.

He knew he had to be careful; while he of course knew exactly the strength of the charge he was using, using a manually controlled and created charge like this was a lot different from what happened in, with and between a spike and a valve.