These niggas is balling backwards like Grant Horace
from XV – This Plane Lyrics on Rap Genius
Meaning
Clever line and play on the name Horace Grant. Who was a basketball player for the Chicago Bulls as well as the Magic, and other teams.

Since Horace Grant is a baller Vizzy plays on with his name and reverses it calling him Grant Horace.
Balling backwards
To help improve the meaning of these lyrics, visit "This Plane" by XV Lyrics and leave a comment on the lyrics box