OSB

Pet Name given to one EuroSex male that rocks my boat.

OSB, come here and let me pull you from behind and never let go!!!

by Marie Francine Victoria May 18, 2008

OSB

Oh Shit Bro or Oh Shit Brother or Oh Shit Boy or Oh Shit Bitch- This phrase can be used several ways and change meaning depending on the situation. It could be from some exciting event or a close call. Could also be used in place of OMG for those guys who are fed up with this phrase (too feminine). OSB is a little more masculine. Usually used at the beginning of a sentence to show excitement.

OSB, that was a close call!
OSB, did you see that!?
WTF!? OSB, you have got to be kidding me! I do not believe it!
OSB, someone stole my car!

by soyousay June 3, 2008

OSB

OSB, aka "One Sentient Being", is a term describing two or more people who "connect brainwaves". For example, this happens when they say, do, text, or think the same thing at the same time.

Person 1: I really hate this tweet.
Person 2: Whoa, I was gonna say that, osb!

by yeetyoongi January 24, 2019

OSB

OSB (Op-Sex Break) This is when you go on a break from a member of the opposite sex. Until you find the right person, you do this normally after a slutty streak to regain dignity.

Andrew B: Get with me!
Zakiah: no... im on an OSB!
Ken: Good on you.

by kenthelegend August 6, 2010

OSB

Obnoxious Sarcastic Bitch

I'm getting really tired of that OSB my brother married slamming all of our family members every chance she gets; then she's so proud of being an OSB she applies the suffix to her signature.

by izzafartsmeller August 18, 2011

Old Sagging Balls (OSB)

Someone who is suffering from aging of the testicles or epidermis surrounding his "junk"

The doctor knew from looking at the man's Old Sagging Balls (OSB) that he was easily 85.

by junk in de trunk February 26, 2010

OSB

An acronym for Oh Shit Button. Used in MMOs, OSBs are OGCD (off global cooldown) instant-cast heals that can be used when the tank unexpectedly takes a massive loss in health.

The tank stood in the telegraph and I had to use my OSB to keep them from dying.

by Finn Woodworth June 21, 2023