"Aw, no ma’am" I’m an old land mine
I been waiting to blow up for a long damn time

from J. Cole – Back to the Topic Freestyle Lyrics on Rap Genius

Meaning

J. Cole had to wait a long time for a deal (he finally got one as the first person signed by Jay-Z’s “Roc Nation” label), just as a landmine lays dormant and doesn’t explode for a long time (unless a child steps on it)

“‘Aw, no ma'am’” refers to the previous line. He is turning down the ladies who are out to fuck everybody.

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