Unfortunately for Cliffjumper, tiny changes in engine pitch - especially in the berth - was something Optimus was very well programmed to pick up on. Given that he was already overdue to wake up, and had internal alarms pinging at him insistently that he need to wake up and check on his charge...

Optimus grumbled at the motions beside, him, arm tensing on red armor, before he onlined his optics right when Cliffjumper was still staring directly at him.

He tilted his helm, silently raising an amused optic ridge.