Definitions by Rowan Ste. Julian

culturejam 

(Noun) The use of visual, spoken or performance art to decry or draw attention to preconceptions, societal mores, governmental abuses or corporate waste, fraud and greed. Also related to culturejamming (V.)

Adbusters.org contains several excellent examples of culturejam.

culturejam by Rowan Ste. Julian August 25, 2003