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1. A phrase used to describe a breach of rules or regulations of the theme park Knotts Berry Farm.
2. An action that the cartoon character Snoopy would not do.
When seeing teenagers sitting on the hand rails, a Snoopy slave (worker at Knotts) exclaimed, "Thats a big Snoopy No No!"
by Snoopy Slave June 20, 2003
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