Normally, he'd have probably felt very, very confused by the sudden touch to his face. Now, however, it just makes him lift his chin a bit, the humming, heated cables in his neck laid bare to Prime.

His palm smooths down Optimus' chest, as if tracing the lines and panels of it. Absorbed in the contours.

"Yeah... Yeah, I kinda -- really wanna... do that. With you."

He nods a few times too many, still staring at Prime.

"Show me?"