Pusha T is the latest big rapper to Skype in to Genius and annotate his own lyrics. He chose to focus on a line off "Mercy" that was seemingly one of those classic King Push coke metaphors: "That white frost on that pound cake, so your Duncan Hines is irrelevant."
Pusha now tells Genius that said line is not, in fact, about coke, but, instead, about his car. The "white frost" refers to its white paint job and the "pound cake" to its tan seats. Pusha's whip is far tastier than your average Duncan Hines.
Get your mind out of the trap house, people.