Juice WRLD and COD Zombies

This is a play on word about the late rapper Juice WRLD and the video game Call of Duty Zombies. In the game, 'perks' are power-ups that enhance a player's abilities, but in slang, a 'perk' is a type of drug. The joke implies that Juice WRLD can't handle using too many drugs, which alludes to his death from an overdose.