The over inflation of an establishment's true worth by unqualified, self-affirming know-nothings ("yelpers") & the immediate feelings of anger, disgust, remorse, and self loathing that inevitably occur after one heeds such advice.
Ted:

Damnit, Joe! Those lousy yelpers tricked me into thinking a run-down hole-in-the-wall *insert establishment* was the second coming of *insert god/messiah figure*!

Joe:
Ha! Another victim of the yelp effect, sucka.
by Jay Whizzle June 5, 2009
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