A thug of large stature. Usually independent of chains of street gang affiliations. Not to be toyed with. Spanish word for BEAR.
You do that wanna mess with Oso he is unstable.
by Big O 213 April 27, 2019
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An acronym for the term "On some other shit"

It is used to describe someone being off topic or saying something extremely irrelevant to the situation. (Or blabbing on about a bunch of nothing)
Bitch, you is OSOS.
My girlfriend is always OSOS!
I'm not even talking about that, you OSOS.
by lisa4queen August 20, 2014
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Oso meaning oh so, or very in some ways you would use it instead of saying so annoying or so stressy
Osostressy, osoannoying
by Badbitchalert June 18, 2017
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Name mexican fourteen year old girl accidentally gives her 16 year old mexican crush as she accidentally calls him "hermoso"
"Eres un hermoso" "What?" "Eres un oso"
by loquis1998 November 3, 2013
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"Other significant other". A non-primary partner in a polyamorous relationship; a fuck buddy or friend with benefits.
"meeting new OSOs always makes me nervous."
"My SO found a new friend online; she's already talking about making him an OSO, which kind of squicks me."
by guyjin March 21, 2007
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The delicate art of receiving a blow job while eating a sandwich ("sammich") that was lovingly prepared by the woman performing the blow job.
I thought getting a blumpkin was good, but getting an Oso is even better! Nom, nom, nom!
by SacTownFamous January 1, 2012
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OSO said to do it. So I did it. It was OSO so I had no choice.
by ?Idk! October 9, 2020
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