I'm on my grind feeble,
To be “on the grind” is to be working hard. In skateboarding, to grind is to slide on a rail or edge, and feeble is a type of skateboard grind.
Feeble also means weak or lacking strength, which isn’t a novel concept to Tyler.
To help improve the meaning of these lyrics, visit “Bastard” by Tyler The Creator Lyrics and leave a comment on the lyrics box