graffiwi 

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"...

graffiwi by GRAFFIWI December 24, 2010

Graffiti-Run 

One of the many sports that is a branch of Darkour.

Involves one or more person(s) equipped with either spray paint or marker and tags as many things as possible in as little time as possible.

Extra points for tagging places high up and hard to reach.

"I tagged Peter's garage while on a graffiti-run."

Graffiti-Run by Shadeuxxx March 5, 2010

Cyber Graffiti 

Posts on message boards.

Posts on message boards are just cyber graffiti, which eventually just slide off the bottom of the page.

Cyber Graffiti by Doghouse Riley December 20, 2009

Physical Graffiti 

Led Zeppelin's sixth and best album. Released in 1975, the double album shows the world's greatest band at the top of its form. In a word, perfection.

IV may have Stairway, but Physical Graffiti reaches new heights of musical greatness.

Physical Graffiti by Napster May 30, 2006

God's Graffiti 

A person who sports a lush, luxurious coat of body hair, generally located, but not limited to, the chest region, and sprouting haphazardly over other areas of the body, sometimes in tufts or single follicle sprigs.

"Ewww, Dan's body hair is matted and gross! Body hair is so 80's!"

"No way, Marie! Body hair is God's graffiti!"

God's Graffiti by Yo!Marie! March 3, 2012

grocery graffiti 

when one takes a dump and leaves some poop smears in the toilet after the poop has been flushed.

man that load was sick, it left a ton of grocery graffiti

grocery graffiti by LJF December 28, 2007

graffiti 

A form of art and expression. The world is each ones canvas.

graffiti by jesse September 14, 2003