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 8, 2010

O.B.

Oral Breath

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

by Peppa October 15, 2003

O.B. Montessori

A cheap school.

Student1: Our school doesn't have budget to send me to the National Spelling Bee.

Student2: Oh, you study in O.B. Montessori.

by the_proud_nerd July 28, 2009

O.B. Gyn Kenobi

A fun way to say "Obstetrician Gynecologist".

JEFF: Sarah, when is your appointment with O.B. Gyn Kenobi?

SARAH: Monday at 9:30 am.

by Peter Buttram, Proctologist / Asstronut July 22, 2006