Nasty art.

Hehe! Pretty nasty huh?.Came across to this unusual art creation while taking a walk around a little city called San Luis Obispo,Ca which i stayed one night.These walls looked very pretty dispite that they we're covered with thousands of chewed gums.
Yesterday i told my friend about these walls,but she said she had seen this before from a travelers guide book.So i guess this is one of the tourist attractions of the city.Unfortunately i didn't have chewing gum hehe.