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

conversational graffitti

When somebody writes a response to graffitti that is already on restroom wall

I used the restroom at a truckstop and somebody had written on the inside of the stall "Bush's head is so far up his ass that his sphinctor is wrapped around his neck and is cutting off oxygen to his brain". Underneath that I wrote "what brain?". This is an example of conversational graffitti.

conversational graffitti by Michael_Hunt May 18, 2008

graffiti 

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

graffiti by jesse September 14, 2003

counter-graffiti

Changing something offensive written in graffiti into something more favorable

Mary used counter-graffiti to change the word "Fag" into "Baguette".

counter-graffiti by awesomeaardvark March 15, 2009