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A Kligger is someone who comes off as retarded for a number of years, then magically returns to normalcy when everyone least expects it. A wolf in tards clothing.

Many Kliggers will act and eat like a retard. But once their opportunity arises, they will strike out using their brain power and subdue the average joe.
I swore that girl was a genuine retarded person.. but when i took English Lit. with her, she destroyed me. She turned out to be a Kligger
by Tracy Terry January 29, 2010
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