Shaq is back on the mic -- the NBA legend just teamed up with EDM superstar Steve Aoki to drop a new banger ... and the song is 🔥🔥🔥!!
Shaquille O'Neal -- AKA DJ Diesel -- dusted off his notebook and came up with some words for "Welcome to the Playhouse" ... rapping about being at the top of the game and partying like crazy.
"Do you know what the cost to be the boss is? 'Til you got more endorsements than loses," the Hall of Famer raps ... adding, "Do you want Shaq to put you in your place? I'll make Steve throw a cake in your face."