G-MOB 

a blood represenative gang based in portland oregon and redding california. violent and trill . ( Get Money Over Bitches) or (Give Me Our Blood) allies with bloods and wcr and rollin 60. enemies is ms-13 and 13 st.by: buddy dunez
heat
dizzle

some g-mob fucked up some ms-13 fuckers

G-MOB by Heat 90210 April 23, 2007

G.B.A. MOBB 

GBA MOBB a gang out of MARYLAND that originally was a graffiti "crew" but then became a feared street gang with branches threwout the world.
Their color is grey bandanas.The only gang in maryland that wears grey bandanas as their signifying mark.
The name has many meanings such as Graffiti Bombin' Assassins Make Others Bleed Badly,Greatness Beyond All,Giving Beatdowns Anonymous,Gang Bangin' Assassins etc etc

They are multiracial and their founder is still the supreme leader.

They have strongholds in Riverdale,MD and Annapolis,MD where they are the prodimenent gang.

G.B.A. MOBB,GBA ALL DAMN DAY BLACK & GREY

G.B.A. MOBB by LORD BEANO November 25, 2011

G.B.A. MOBB 

Giving Beatdowns Anonymous MOBB.A gang out of MARYLAND that was originally a graffiti crew.Original meaning was Graffiti Bombin' Assassins but has now expanded into a worldwide criminal enterprise.G.B.A. MOBB has endless meanings for its initials including Greatness Beyond All,Grey Bandana's Allday,Gang Bangin' Allday etc. etc.
The color of this gang is grey bandanas hence one of the meanings for the secretive initials.

G.B.A. MOBB

G.B.A. MOBB by SHOCK-C November 14, 2011

GMOB 

Grown Men on Bicycles - a derogatory name for men over 30 who ride BMX bicycles aimlessly as if they are casing a neighborhood. Typically used by neighborhood watch associations, but has since been embraced by many men on bicycles in protest of propose discriminatory bicycle ordinances.

Almost hit a GMOB at F and Henderson going the wrong way on the one-way street.

GMOB by bofree June 14, 2016