look up any word, like dirty sanchez:
 
4.
sys
Shoot Yourself
Becomming more popular than EYL (end your life) and KYS (kill yourself)
Guy 1: "Dude, you're fucking dumb EYL"
Guy 2: "Ohh look over there, a gun SYS"
Guy 1: "Ok, fine I will"
by kanewtz December 03, 2008
 
1.
sys
Short for See You Soon.
Guy: I'll be right there
Girl: Okay
Guy: sys
by PhoenixX April 02, 2005
 
2.
sys
This has quite a few meanings.

1: (My Favourite) SHUT YOUR SHIT!

2: Shoot yourself.

3: Slap yourself.

4: See you soon.

Example for the 1st meaning.
Tim: Dude omg i love cod man.. it's like the best game everr!!! i pr0 snipez omg!!

Simon: Dude, SYS.
by Vope July 01, 2010
 
3.
SYS
Slap Your Self
SYS Nigga!!
by TheGreatVirus November 18, 2003