"I'm on the Dyno wit the black mag, black mag" (word?)
"Dyno wit the black mag, black mag, black mag, Dyno wit the.." (word?)

from The Cool Kids – Black Mags Lyrics on Rap Genius

Meaning

Dyno is a biking brand. Mags are actually a certain type of rim with 5 large plastic “spokes” instead of a normal rim that has many small metal spokes.

To help improve the meaning of these lyrics, visit “Black Mags” by The Cool Kids Lyrics and leave a comment on the lyrics box