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1.
WSW
West Side Warriors -- a gang moniker of what is supposedly the entire west side of the city of Wilmington, CA. Rivals of the East Side... um... Elephants? Epileptics?

Wannabe gangbanger kids occasionally spray WSW onto homes, fences, walls and sidewalks, intimidating no one and annoying whoever ends up having to paint over it. Like me.
Wall: "WSW"

Me: "Shit."
by Got one. November 30, 2007
 
2.
wsw
White Street Walker
Was driving around and saw a WSW waiting on the corner of Hollywood and Vine...
by BoredGuy August 15, 2003
 
3.
wsw
WESTSIDE WITCHES, also known as WW.
those WSWs are hella tight.
by HELLADOPE February 20, 2006