pavement artist

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An artist who draws pictures on the pavement, often hoping to get donations from the passers-by.
• noun espionage A specialist in outdoor surveillance as a pedestrian.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone who draws on the pavement with colored chalks (hoping that passers-by will give them money)