the first Google prank directing users to project their thoughts and visualize what they wanted to see on google
yes
Google has a great history of playing April Fools' jokes on its users. Some of these hoaxes include MentalPlex, which involved a series of error messages, PigeonRank, and Google Gulp.
I've included a complete list of Google's devious hoaxes (courtesy of Wikipedia) and a list of some of the pranks accompanied with pictures and links (courtesy of About.com), but here are five of my personal favorites:2011: Google Motion - Spoof of Xbox Kinect and other motion controlled devices2011: Google Gulp! - A drink that claimed to increase the intelligence of the drinker.2010: Google changed its name to Topeka Inc. - Competition for location of Google's ultra high speed network. (actual honors went to Kansas City)2009: CADIE - Cognitive Autoheuristic Distributed-Intelligence Entity, a newly created artificial intelligence with the personality of a teenager2000: Google's MentalPlex - Google could now find search results by reading your mind!