1. Noun

Year after year their football program fails to impress as they lose to Rancho Cucamonga High School. Also has a large concentration of homosexuals and snobby blondes.

2. Verb
Commonly used to describe terrible beatings and embarrassment.
Man did you see that Los Osos High School! What a terrible thing to happen to someone!
by Driftkid November 15, 2011
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A small school where the vice principal/ 8th grade P.E coach (2010-11 or so) walk around making up the dress code as they go, giving out a many detentions they can. Where the skinny bitches try to act cool, the skaters piss the teachers off, druggies are everywhere, teachers are smoking weed, and people like me sorry losers get they're heads slamed in lockers. It's such a small school there's 1 emo. It's a small town hell.
Dude I hate Los Osos Middle School so much LIONS SUCK!!!!!!
by Vicken131313 April 30, 2011
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A Person Who Get
Money, Fly,Confident,Arrogant,Self Made, Fxck Bad Bitxhes & Ain't Scared to be himself around Nobody
1.Oh my god Kaison is so Oso Slime
2. Why won’t you work on being Oso Slime More
3. Do you have what it takes to being , Oso Slime?
by Kaison Chrome July 23, 2023
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It is a youtube series made by a child who is never impressed with the final product even though others encourage him to make more.
Me: Hey, do you know the definition of mediocrity?
You: Yea its Oso Reviews
Me: Thanks!
by SullivanNephew May 13, 2017
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Oso meaning ya name ring bells someone to be scared of he is a menace
by chreme1789 November 13, 2020
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oso meaning most feared,rings bells, not to be played with.
Used to describe a big black scary man
"Hide your wife's and love the mandem gc oso is coming"
by Einstein'sTutor October 11, 2021
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