What is smell what the rock is cooking?

"What The Rock Is Cooking" is a catchphrase made famous by former professional wrestler and actor Dwayne "The Rock" Johnson. He would use this catchphrase during his wrestling matches and it became one of his most well-known phrases. The phrase is meant to suggest that he is preparing something impressive or epic, alluding to the idea that he is a force to be reckoned with. Johnson has also used the catchphrase in his various acting roles and public appearances, further solidifying its association with his persona.