At any given moment Shawn could lose it, be on the news
Iron cuffs - arms through it, or stuffed with embalming fluid

from Jay Z (Ft. Beanie Sigel & Scarface) – This Can't Be Life Lyrics on Rap Genius

Meaning

Jay-Z (whose real name is Shawn Carter) is talking about his frustration with his life and the danger of dealing drugs. He’s close to snapping and just killing somebody and getting arrested (or, worse, getting killed himself)

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