It's only four letters, I ain't worried 'bout a sentence (k-i-l-o)
Since Pusha spells out “kilo” in the background of this line, those are probably the four letters he refers to. He doesn’t give a damn about jail. There’s money to be made.
Pusha’s also playing on “letters” and “sentence”, as in “jail sentence”.
Pusha might also be indicating that he has some dirty cops on the payroll that get his coke through. Which is why he doesn’t worry about getting a jail sentence.
To help improve the meaning of these lyrics, visit "Road Runner" by Pusha T (Ft. Troy Ave) Lyrics and leave a comment on the lyrics box