Medbay, night cycle. The overhead lights are dimmed. Knock Out is alone, idly polishing one of his wheels with a microfiber cloth, humming some Decepticon lounge tune.

The doors slide open. Heavy steps enter. Knock Out doesn't even look up. "If you're here to ravage me, at least close the door first." he purred sweetly.

Optimus doesn’t speak. He walks to the center of the room. Stops. Stares. "What you said on the command deck today was unacceptable." He said sternly.

Knock Out smirked, still polishing. "You'll have to be more specific. I say a lot of unacceptable things."

"You crossed a line." Optimus continued.