Top definition
The use of a Wi-Fi network's SSID as a means of communicating a short message to the immediate reachable area surrounding its source, thereby vandalizing a physical zone with a digital graffiti message.
Let's see if I can get onto a free network here... woah, lots of graffiwi: "stop the war", "no blood for oil", "pidgeons rule"...
by GRAFFIWI December 23, 2010
Get the mug
Get a graffiwi mug for your buddy Sarah.