Cesium salami

Cesium salami is apparently a Cybertronian food item, though it has primarily been referenced when being used as a euphemism for "nonsense".

Fiction

The Transformers cartoon

In 2005 on Quintessa, Slag claimed Grimlock, who was certain the missing Hot Rod and Kup were close by, was full of beryllium baloney. Grimlock quickly countered with his belief that Slag was full of cesium salami. This battle of wits did not have the chance to escalate, however, as it was ended by Wheelie's sudden appearance. The Transformers: The Movie

2005 IDW continuity

In a simulated reality, Sideswipe fed Bob the Insecticon cesium salami as a treat. The Life of Sideswipe

Games

Transformers: Fall of Cybertron

Grimlock and Slug got into an argument over whether Grimlock had just torn through a number of Insecticons like they were beryllium baloney or cesium salami (Grimlock thought the latter). Fall of Cybertron