sos

Short for "Stay on Subject"
Used primarily in online classrooms; when the chatbox explodes with non-important topics such as the teacher's hair or a student's favorite aunt.
In physics class:

Dave: "Dude, my aunt is such a crazy cat person"
Mary: "Really? My uncle has a manic obsession with growing purple flowers"
Isaac: SOS guys
Teacher: Dave, Mary, and Isaac. What have I told you about talking about things not related to the subject material?
by arc.t415 October 02, 2014
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so

Something you end a sentence with when trying to make a sentence of why your doing something. Commonly used by lazy people.
John: Why cant you go to he movies?
Tim: I dont have much money.
John: What about your job helping your neighbour with her yard?
Tim: I kinda killed all the plants so...
by HoRNNy MexiiiiCANo November 13, 2010
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Not-So

1. A "Not-So" is a person who talks smart, is a big shot, a snob, who likes to think their superior and has "power" overr others with groups which leads to rejection and sometimes social internet wars, and favor of others.

2. A Person who is living in a imagination where they think they are powerful, invincible, Superb, & just overall perfect when their quite Not-So.
Elitism, Superiority, Snob, Favoritism, Perfectionist, Jerk, Not-So
by Soul890 Elitism Superiority January 30, 2011
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SOS

Someone Over (the) Shoulder.

It can be used when your mother is standing right behind you and keeping a watch on what you are doing on the net. Obviously, you cannot tell your girlfriend or whomever that your mom is behind you, so you can just type SOS.
That way your mom won't understand but the person you are talking to can be careful.
Your GF- HEY!
*your mom comes behind and watches the screen*
YOU- SOS
GF- Ok. How are you?
*normal and formal chat follows and your mom ain't suspicious*
*Day Saved*
You can use it against your wife too.
by akky47 October 10, 2010
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so

A no-no word.

Word used to show that you don't know how/ want to continue a conversation.
by imdreamingofmonsters July 09, 2014
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on so

1980s. Meaning yes or I agree.
A: "Aye bro this song🔥🔥"

B: "On So."

A: "We still going out tonight?"

B: "On So"

A: “ Damn them hoes cold.”
B: “ On So.”
by Onsopussy January 24, 2018
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so's

Contraction of 'so is'.
eg. "Just wait, I'm coming".
Response "So's Christmas."
by Tracy Kolenchuk May 17, 2006
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