Hear the difference? I’m cool like that
Oh, you spit? Well the retarded drool is back

from Kendrick Lamar – Dumb It Down Lyrics on Rap Genius

Meaning

Kendrick juxtaposes his style of “spitting” i.e. his flow and rhymes, with retarded drool of other rappers

To help improve the meaning of these lyrics, visit "Dumb It Down" by Kendrick Lamar Lyrics and leave a comment on the lyrics box