"...I..."

Optics wide, he shuddered again, wordlessly crying out at the penetration. The feeling of it alone was intense, but the lingering charge clinging to her fingers only added to the foreign, almost forbidden pleasure.

"Y-yes...?"

Spike twitching with sudden eagerness, he nodded, cautiously reaching down from her spike with shaky fingers. Glancing over at her for confirmation, Optimus traced the rim of her valve, engine gunning embarrassingly loud with want.