I am a fartist and i like to fart other than that burping is good better out than in i say =P, I think everything can be categorized as somewhat of an art form or another as long as there is some effort of a person or thing. i saw a documentary of men who get paid by the city to clean graffiti and the paint that covers up the graffiti was considered artwork over artwork.
if you bump in to a glass on a table filled with paint and it falls on a paper or canvas, is it considered art? but if you have the intention to bump the glass to land on the canvas, doing so considers an effort to create something we can call art.
after all that it goes thru who or what made the artwork. ex: a splat of paint on a paper from Salvador Dali will cost $100,000 a splat of paint on a paper from lady gaga will coast $500, a splat of paint on a paper from someone Unknown = ?.
the more effort put in to creating something the more higher rank it can get in artwork consideration.
my 2 cents.