Any form of art that results in a shift in popular perception, draws mass attention, or has been created purposefully to challenge the status-quo.

In contrast to an advertising stunt, an true art-bomb is created without any corporate or political influence. Although some music and design can be considered art-bombs if it makes a significant cultural impact.
Use is a sentence:

"Banksy art-bombed Central Park with a pop-up shop of $60 paintings."

"The Beatles art-bomb opened the doors to eastern philosophy."

"Frank Lloyd Wright art-bombed the world of architecture by taking the environment into consideration."

"I'm going to art-bomb fashion week to get media attention for my product line."

"Shepard Fairey is one of the most significant art-bombers of our time."
by Design Girl 2.0 October 20, 2013
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Photographing the superimposition of real objects or people into a work of art, typically for amusement.

Similar to photo bombing.
Art bombing at "And Now It's Art" website
by Artbomber February 15, 2010
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