The most retarded looking thing a human can wear on their head. Usually worn by teenage or mid-20something males to look "cool."
"Look at that tool over there, with the Flat Bill Hat"

"Check out my hat!" "Sorry bro, you look like a retard."
by Snarky48 June 18, 2013
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Some one who wears there hat with a flat bill backwards. Wigger.
Rodney is a flat-bill-hat-a-puss.
by twohearts May 13, 2009
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