Top Definition
OB
Short for Oh Brother.

Usually said in conversation when wanting to express emotions of exasperation.
Liz Lemon (30 Rock): (Rolls eyes) "Ohh brother"

Weirdo: "OMG don't you dare put that on fb.. I look soooo fat! Delete it now! DELETE IT!"

Denise/Justine/Trish: "OB!"
by Take that Jack October 31, 2009

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OB
A community on the beach within San Diego city limits, zip code 92107, known as Ocean Beach which embraces its reputation as an enclave of counterculture, free thinking, pseudo-anarchists, hippies and artists. It has long had a logo bumper sticker seen in windows of cars with the letters "OB" with a seagull in flight underneath. Today it is home to hippies young and old, surfers, bikers, a plethora of misfits and others. Many proudly call themselves "Obecians". (see entry) Its Chili cook-off and street fair the last week of June is among the largest of outdoor street festivals on the West Coast, and funds the fourth of July fireworks festival which attracts hundreds of thousands of viewers on that holiday.
Seen on bumper sticker on old VW Bus: "US out of OB!"
by John1962 March 04, 2007

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Open Bum Smell
he smells like he has got O.B.S, dirty boy!
by Floydsta July 04, 2011

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OB
Out Of Boundary, from a different place than you are
Them OB's from Carver Ranches always coming to Hallandale starting shit but when its time to fight they call the police.
by 90's February 15, 2006

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Ocean Beach

San Diego surfbum neighborhood.
Let's go to that bar in OB.
by Ken December 15, 2003

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OB
Original Badass
Clint Eastwood is an OB Original Badass.

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Ob'
Someone that is obese, also like obea
Louis is obea because he ate the pantry
by Louie September 28, 2003

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The Urban Dictionary T-Shirt

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