They stay out all night on the basketball court
Practicing, and practicing their jump shot
Practicing their hook-shot
And practicing and practicing, and then they're qualified for the majors

from Big Boi (Ft. Ludacris & T.I.) – In the A Lyrics on Rap Genius

Meaning

Here he implies that spending time on extracurricular activities like sports is a waste of time. You should instead be studying your school work and things that might not be fun, but will pay off in the long run.

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