Decepticon-shaped rock

Later that day, Cliffjumper also destroyed Mirage's pet rock.

With the Decepticons about, everyone has to stay alert. You never where a 'Con could be lurking; after all, they can disguise themselves as anything. That jet over there? It could be a Decepticon. That toaster? It's probably a Decepticon. That shadowy figure up ahead? Definitely a Decepticon!

No one know this better than Cliffjumper, which is why he chooses to shoot first and ask questions later.

Fiction

The Transformers cartoon

The ever-vigilant Cliffjumper opened fire on what he thought was an attacking Decepticon. In reality, it was just a Decepticon-shaped rock. Transport to Oblivion