SYS aka Synchronize yourself. A politically correct way tell to tell someone to off themselves. Highly effective term to use when you're in class, or in the presence of another authority figure that can get you into trouble , but you just can't control your buring desire to tell some dumb cunt that you cant stand to hear her speak.

Dumb Cunt: " You're from India, you must be fluent in Indian"
You:" Bitch sys"

by queensys September 17, 2017

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Get the SYSmug.

sying

Sying's are good friends and usually a good sibling but also have a terrible temper. They are very pretty and love relationships.

Sying is so cute

by AnimeLove2016 July 4, 2016

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Get the syingmug.

In the Sys

Pronounced (in•thuh•sis)

Short for "in the system" of whoever the subject happens to be. This is usually referring to drugs and alcohol but it can refer to other things as well.

"I got liquor in the sys!"
"Excuse her. She got too much coke in the sys."
"We gotta find an antidote. For God's sake man! I got freakin' poison in the sys!"
"All you need is a lil' THC in the sys. Then, you'll feel better man. Don't worry."

by JamalJøhnsøn January 15, 2017

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