15, I was pushing carts at K-Mart
By 21, they said I'd be inside a graveyard
The numbers Cyhi refers to are ages — at age 15 he worked for K-Mart, and, as is stereo-typically said of many living in poor, crime ridden areas, was expected to be dead.
Note that when he says “at K-Mart” it sounds like “AK-Mart” -an AK, automatic Kalashnikov, is an assault rifle, tying it with the previous line.
This is also a continuation of the last line, as an AR-15 is a very popular assault rifle.
“By 21 they said I’d be inside a graveyard” might also reference Pusha T’s line from So Appalled “CNN said I’d be dead by 21”, which CyHi was also featured on
To help improve the meaning of these lyrics, visit "The Morning" by Raekwon (Ft. 2 Chainz, Common, CyHi The Prynce, D'Banj, Kid Cudi & Pusha T) Lyrics and leave a comment on the lyrics box