Urban Dictionary: OB

1) Obese bitch (n)

Came from school

That girl is an OB.
OB! (yelled at someone)

by 781201haj March 16, 2005

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O.B.

Oral Breath

eww, i can smell your OB!!!!!

by Peppa October 15, 2003

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"owned by" you add the initial of the person after

jack just dunked on you. OBJ

by dianab April 30, 2006

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From Oak Bluffs, a town on Marthas Vinyard. Ob is where all the frat boys and their trasher girlfriends go for the summer to drink and generaly act stupidly. Basicaly, the vacation spot for all the people who want to go to the vinyard, but really only want to get drunk and hook up.

"Did you see that trasher blasting the rap music from his fathers suv?" "yeah,totaly ob."

by clark t.g. May 26, 2005