Song: "Lift Off" (2011)
Album: Watch The Throne
First Meaning: Most people who make a bunch of money and find unnatural success tend to stop at some point. "Earnhardt" = "Earn hard."
Second Meaning: This is illustrated this by referencing Dale Earnhardt's death.

Complex Says: Too soon?

Is It A Double Entendre? English Professor Adam Bradley: "Punning word replacement."