When someone is over-reliant on Wikipedia for information, he or she is said to have matriculated at the University of Wikipedia. This is an especially appropriate characterization when the individual is disseminating questionable information or is curiously reluctant to cite a specific source upon request.
Guy 1: Mike was always a major dumbass. Any idea what's up with this Saussure crap he's been spewing all of a sudden? He never attended college, did he?
Guy 2: Not unless you count the University of Wikipedia.
Guy 1: That makes sense. A lot of his information is very off-base.