The Rock elaborates on Vin Diesel feud by offering his definition of a "candy ass"
Dictionaries have failed us, but The Rock comes through

While making films about scowling men racing cars and punching one another in their scowling faces, Dwayne “The Rock” Johnson and Vin “The Tank Top” Diesel learned, quite publicly, that they don’t like each other much at all. And now, after years of revving their mouth-engines at each other through statements evoking Federico Fellini, the show Ballers, and, of course, the complicated nature of all family relationships, The Rock has decided to speak on the issue once more and offer us a working definition of the term “candy ass” in the process.
In a Vanity Fair profile, the candy ass post heard ‘round the world is introduced and contextualized as “one of The Rock’s trademark wrestling put-downs.” When asked how it relates to a co-star like Diesel, The Rock elaborates by stating that “a candy ass is something you don’t want to be.”
“The best way that I can describe a candy ass is: Life is so much easier, I have found, when you are not full of shit,” he continues, before really complicating the ass-centric metaphor with, “And a candy ass is completely full of shit.”
Since we all know whose sugary ass is filled with shit in this scenario, The Rock goes on to say that, despite being our two foremost musclebound, shiny-headed actors, he and Vin Diesel are “philosophically two different people, and we approach the business of moviemaking in two very different ways.”