Jay-Z "30 Something" (2006)
LYRIC: "30's the new 20 nigga, I'm on fire still/These young boys is like fire drills (Uhh)/False alarms (Uhh), the next don (Naw)/He ain't got it (Uhh), on to the next one (Young)”
TARGET: LIL WAYNE
SHOTS FIRED? PROBABLY. "These young boys is like fire drills," yeah? Wayne's most recent single? "Fireman." Not too hard to connect those dots.