Andy Warhol, when confronted about the fact that his works are not "art" since he just silkscreens and otherwise "mass manufactures" his work, said that the "art" is in the selling. It is the redifinition that has become art.
If you think garbage and silk screened Campbell's soup cans are interesting as "art", check out the artist that sell his FECES as art:
http://blog.seattlepi.nwsource.com/a...ves/149202.asp