Definitions by Dr. Rockstar

GMB 

Gaand mara bro. It is used to tell an annoying person to fuck off, in Indian subcontinent. It is also a terminology used by a close group of friends to subtly denote each other to cut the crap in a friendly manner.

Darshan: Hey bro! What were you doing at 3am in the night ?
Harsh: GMB man. Fuck off.

GMB by Dr. Rockstar June 7, 2020