Now I spit a 16 straight with no punch
Delivering a 16-bar verse without “punching in” vocals.
He may also be referring to punchline-oriented lyricism (or “hashtag rap”) that a lot of mainstream artists like Lil Wayne rely on.
Or it could be a double entendre as well. “Punch” not only means “punching in” vocals, but can also refer to “punch” drink that many kids drink for school lunch.
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