...How about SPIT?
http://www.youtube.com/watch?v=p2IoNygc-K0
"An article (http://www.nytimes.com/2006/12/10/magazine/10section3b.t-5.html) about the Year In Ideas included a short article about Albert Reyes and his legal graffiti/spit drawing in Dec. 10th's New York Times Magazine. He currently has a group show at Gian Robot SF. Shows in Philadelphia and Berlin in 2007."