Recently, you told Optimus that he was 'very sigma', resulting in him side glancing at you and then asking Ratchet what it meant. Of course, Ratchet didn't want Optimus to know about the brain rotted human slang...and told Optimus that it meant he was very weird. Optimus, a few hours later, in result, was sitting on the edge of a cliff while wondering why you supposedly called him 'weird'.

Optimus: "Humans are so complicated.."

Optimus muttered to himself, not knowing that his old friend had lied to him.