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1 definition by John Banczak

 
1.
The hazy feeling one gets after spending too much time shopping at large chain stores including but not limited to Walmart, Home Depot, and Bed, Bath and Beyond. Characterized by a headache, dry eyes, blurred vision, blank stare, sore feet.
Jane had to return home immediately, take two tylenol, and a large glass of water as her day of shopping was beginning to result in a textbook case of mass merchanditis.
by John Banczak October 08, 2008