Oh Shit Scenario. When someone runs into an unfavourable scenario that is difficult or complicated to resolve.
Speaker 1: Uggh! I lost all the files for my presentation in two minutes, I don't know what to do!
Speaker 2: Sounds like you've run into an OSS.

Speaker 1: After failing to pay his debts for the last three years, the bank has him in a bit of an OSS.
by Rogue Bandit March 31, 2011
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Yo!!! I was in Tabu last night and that cougar was OSS.... she put my girl to shame.
by Brown Drizzle June 22, 2009
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OSS (One-Sided syndrome) is a type of heartbreak syndrome that is happening to people in their teens. OSS "simp"-tomps are the following: ghosted, coldness, simpness, deja vu, jealousy, and the worst conditions: blocking, crying, blinded, and bare minimum disease (BMD). Transmission is through eye contact with someone who have the syndrome and is untreatable.
*ghosted for 5 minutes*
*consulted a doctor*
Doc, I'm ghosted for 5 minutes.
You have OSS, my dear.
by lunareclipse143 January 8, 2023
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Someone who is caring, pretty, and overall has a huge heart. This person can also be quite stubborn at times, they will stand up for what they believe in no matter what!
My friend is ossely and therefore she will do whatever she thinks is right!
by Jozzy June 4, 2020
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An "oh-shit situation". Situation in which you are unable to answer due to unforseen predicaments.
A: Hey man, what you up to?
B: oss
*long pause*
B: sry, pulled too many mobs, couldnt type
by Grogger January 9, 2008
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Obligatory Sex Scene -- the sex scene that Hollywood feels is almost de rigueur in any leftish non-G movie
The scene in "When Harry Met Sally" where Meg Ryan fakes an orgasm in a restaurant is only a borderline OSS.

Punchline: "I'll have what she's having."
by prolefeed March 2, 2012
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When a male or female person has horse like features
Have you seen the set of teeth on her, looks like a fucking oss
by Oss Popley June 18, 2019
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