OSM

Meaning "Oh shit! Moment"

Can also be spelled OS!M

From the Sookie Stackhouse books

Guy 1: Isn't that Amy chick smoking hot
Guy 2: Yeah but I hear she has a huge bush...I'd still fuck her.
*Amy is watching the whole exchange behind guy 2's back*
Guy 1: Ouch...what an OSM

by Wait................Shit September 02, 2009

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Oh Shit Moment
1. The point of realization that you forgot to do something important.
2. The point in time of a discovery that you forgot a step in assembly or development process when you realize you forgot an earlier step.
3. A moment of surprise occurring when some new information is discovered that provides a negative or detrimental result in an otherwise wonderful event.

Ricky had still another OSM when he discovered the hole in the condom he used last night.

by MarkHanley August 12, 2004

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A Group if so called gangbangers but are really fruity and gay and a bunch of fuck boys that go to longwood.

The Memebers of OSM Are gay

by OSMRSumBitches December 18, 2019

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Out
Standing

Members
(Lame af)
A Word that lame ass boys from longwood say to make it seem like they are in a gang. Even when nobody actually gives a flying fuck.

Aye Ralph and nem in OSM (Lame af)

by Longwood Facts December 13, 2019

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