And now the shit's getting crazier and major
Kids younger than me, they got the Sky brand pagers

from The Notorious B.I.G. – Things Done Changed Lyrics on Rap Genius

Meaning

Sky pagers were very useful for drug dealers in the early 90s.

Biggie is expressing incredulity both that kids younger than him (he would have been in his late teens when he recorded this song) are dealing drugs, and that they’re employing such sophisticated methodology

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