Turn some jams on
Funkadelic bumpin' through the speakers on my headphones
"Not just knee-deep" hearin' it through Dre Beats
Mesmerize the G as the bassline invades me

from Wale (Ft. Scarface) – Limitless Lyrics on Rap Genius

Meaning

Through Scarface’s Beats By Dre headphones he can hear “(Not Just) Knee Deep” playing, a Funkadelic song with a crazy bassline from the Uncle Jam Wants You album. The song is best known among hip-hop heads for being sampled in De La Soul’s “Me, Myself, and I”, together with Edwin Birdsong’s “Rapper Dapper Snapper”.
https://www.youtube.com/watch?v=bN1xFZ2vfwY

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