Flat Brimmer 

Someone that's into "extreme" sports such as down hill mtn. biking, BMX, motocross or anything that you can get "rad" with. A flat brimmer will wear a ball cap with a flat brim with Oakley sunglasses and can usually be seen drinking a Monster Energy drink. A flat brimmer will think he or she is better than the rest and loves to pose for photographs.

Did you see that flat brimmer with the Fox jersey acting like a douche to those other riders?

Flat Brimmer by Surlybob March 16, 2015

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-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

Flat Brimmed Energy Drinker 

Somewhere between a skittle thug and what you would find under flat brim. But most applicable when applied to downhill mountain bikers. They have an affinity for chilling at the trailhead bumping gansta rap and puffin' tuff and are physically incapable of getting their $5,000 bicycle up the hill so must coordinate with a cohort to shuttle themselves up and down the mountain with their two $30,000 pick up trucks. As you can see, this becomes a financially burdensome endeavor, especially when you take into account the 5 Monsters they consume per day.

You flat brimmed energy drinkers are douchebags!

Flat Brimmed Energy Drinker by fuzzywuzzy242 November 15, 2010

flat -brimmed cap 

This cap is new out of the box and worn fresh with stickers entact. It is worn by one who prentends to show the status of their wealth by taking care of their clothes, keeping their jeans and clothes spotless, and through the fact that they are young hipsters, not all African, however generally from either LA, Northern California, or Brooklyn.

Dude, you are totally Santa Cruz with your flat -brimmed cap for an 8 year old.

flat -brimmed cap by USucka July 6, 2016

Flatbrimmer 

An annoying sub-culture of people who wear over sized clothes and flatbrim hats with stickers still attached. Also known as "yeah dudes" or "yeah brahs"

Not many are famous due to lack of ambition. However a known flatbrimmer would be Rob Dyrdek.

Flatbrimmer by antiflatbrim August 18, 2012