flat hat 

funny like Buster Keaton ; from the hat popularised by the music-hall and film comedian

that guy's funny like a flat hat

flat hat by Bipbebop February 5, 2010

hope to shit in your flat hat 

Affirmative response to a question implying that the “yes” answer was more or less obvious or just a simple “Sure it’s going to happen, what else would you expect?” Navy slang from the 1950s referring to the “dress blue” flat had enlisted sailors wore at that time.

“You going out drinking tonight, Richie? “ “I hope to shit in your flat hat, I am”

hope to shit in your flat hat by Tony Duhamel November 17, 2007

Flat Bill Hat

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."

Flat Bill Hat by Snarky48 June 17, 2013

Flat-Brimmed Hat

The flat brimmed baseball hat is said to have originated from Oakland and California.

"The first thing people did when buying a baseball hat in the 90's was bend the brim. Crack and drug dealers would wear glasses and a hat with a straight brim to throw off the stereotypical image" (of a backwards cap or bent baseball cap which was commonly worn in the 1990's)
"I wear these glasses so i can look like a square, but if you see me in a fight with a bear, don't help me nigga, help the bear"
The style generally moved to the gangster rap scene in the mid to late 90's to associate the rappers with drug dealers, wearing clothes straight off the rack (tags included) and being clean cut and fresh.

Post 2005 people without idea of origin wear the hat as the new style, rarely bending the brim in an "on field" cap style, this style is associated with post 1990 born, any social group from club goers to skaters.

Sources: Rapper, Slang inventor and style originator E-40 mentions in a documentary Blueprint of a self made Millionaire, where the style originated.
No gangster rap vidoes before 1994 featured a straight brim hat.

You looked like a nerd NOT having a Flat-Brimmed Hat and wearing glasses late 1980's early 90's.

You looked like you sold drugs wearing a Flat-Brimmed Hat hat mid 90's

You looked like a rapper late 90's fresh and clean cut possibly mating colours to your clothes and shoes.

You look like a try hard wearing a straight brim hat post 2005.

Flat-Brimmed Hat by Johnnythedestroyer June 13, 2012

flat-bill-hat-a-puss 

Some one who wears there hat with a flat bill backwards. Wigger.

Rodney is a flat-bill-hat-a-puss.

flat-bill-hat-a-puss by twohearts May 12, 2009

Flat Brim Hat 

The modern day dunce cap

Tosh.0: the flat brim hat is the modern day dunce cap

Flat Brim Hat by Rottie June 9, 2016

Flat-Brimmed Hat

Although no-one knows the exact origin of the flat-brimmed hat style, a majority of speculation notes that african-americans living within lower-class suburbanite neighborhoods, or "ghettos", were the originators of the style.

Dually noted was its representation of struggle arising from poor living conditions within the lower-socioeconomic segment of society.

Unfortunetly, somewhere along the way, "Twats" or "Fake Ass Bitches" stole the iconic style, and began to showcase it throughout middle-class and upper-class societies. Notoriety for this type of "douchebaggery" was taken by most "wiggers", whom still to this day showcase this style amoung their "dirty-ass" peers.

In an ideal world, the flat-brimmed hat would be quashed, and represent a segment of history. However, this would only allow other blatent showcases of "douchebaggery" to take its space.

Look at that kid. I just want to punch him in the lips. Only a fake-ass bitch would wear a stupid flat-brimmed hat.

You are scum, because you wear a flat-brimmed hat.

What a fuckin d-bag.

Flat-Brimmed Hat by Timbur March 12, 2011