The closer and further fown Optimus' attention went, the more nervous he got again. Not in the same way as before the inadvertent interruption, but Cliffjumper was still twitchy.

This time, though, he didn't just clutch at the Prime's shoulders or at the audials (the latter of which was probably better that he didn't), but was following seams in the armour over and around the shoulders, scraping an angle of his fingerstips along them.

The moment Optimus' lips brushed the seam again, Cliffjumper visibly twitched, engine stalling and then revving, even as he couldn't quite keep looking at Optimus... the lick got a static-fuzzed noise another tremble in the now more visible seams.