G is for Gum

Graffiti Alley Ann Arbor MI
photo by c.bayrak

Yes, there is such as thing as gum graffiti (gum walls)
Here is flickr set that shows how elaborate some can be.
Gum Wall of Seattle
Bubble gum alley in San Luis Obispo, California


Ben Wilson's Chewing Gum Miniature Art
Source: Telegraph.co.uk
then there is
Maurizio Savini who creates life size sculptures with chewed bubble gum