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O.B

O.B is shorthand for Overboard

Dude 1: Hey man, Nice car
Dude 2: Hey thanks man, I went O.B on it

by The_Original_OneEyed_Wolf November 18, 2011


O.B

Original Beaner

Pancho Villa was One of the fucking best O.b's.

by That mexican guy with the slay April 14, 2009


O.B.

Ocean Beach

San Diego surfbum neighborhood.

Let's go to that bar in OB.

by Ken December 15, 2003


O.B.

1. an Out of Boundary; from another city or district
2. someone you can't trust; or someone you dont know

1. wutta uFck he lookin at? o.b. ca get da fade!
2. even tho im kool wit em, he still a o.b., ya dig?
3. man dem o.b.'s from _______ soft as uFck!

by PM Aka Da Godfather November 04, 2006


O.B.

Passsed the obsession with something

Shannon was totally O.B. with her Mercedes.

by Jimmy Dalts December 29, 2005


O.B.

Oatmeal Boy, referring to one whom consumes an unusual amount of oatmeal on a daily basis, especially in the mornings. This may result in him smelling like oatmeal throughout the day and may have negative effects on his ability to grow facial hair. In particular, he may not be able to grow facial hair on his cheeks.

Employee 1: What is that smell?

Employee 2: Oh thats just O.B., had his oatmeal this morning I guess.
Employee 1: What happened to his beard?
Employee 2: Must have fallen off since he is really putting away that oatmeal

by Gnome Guy 65 June 25, 2010


O.B.

The acronym for Obsessively Bitchin. When a person will not stop doing, saying or is just over the top.

That dude over their was O.B. last night with the beer

by granniebeater April 09, 2010