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1.
A term used in the mountains to describe people from lower elevations.
Driver: This guy is driving so slow; he must be a flatlander.
Passenger: Well, according to his license plate, he's a floridiot.
by blueridgenative September 28, 2006
 
2.
the term flatlander isn't specific to any state. It's a term that all mountain people use to describe tourist that don't have the skills/knowledge to recreate in the mountains
The search and rescue team spent all week trying to find the flatlanders that tried to bag the fourteener with half a liter of water and a candy bar.

Did you see the flatlander try and make it down the bumps? It was histerical.
by Paul S. W. September 11, 2006
 
3.
thats what people in wisconsin call people from illinois
i wish these fucking flatlanders would go back to their own state
by andrea July 09, 2004
 
4.
A person from any large city who does not know how to drive well on roads that aren't straight and flat. You can tell one because when you get stuck behind them on a mountain road they take the curves at a snails pace, but when you finally come to a flat/straight stretch (where you could potentially pass their slow ass) they speed up like crazy till the next curve. Lather, rinse, repeat. --Insult is added to injury when the flat landers have a large truck/SUV/other form of 4-wheel drive and do this.
Learn to drive, you flat lander!
by scottiedawg86 August 07, 2009
 
5.
Used by native Vermonters to describe people from anywhere else in the country, regardless of whether or not your state has a higher elevation than Vermont. If you aren't native to Vermont, you're a flatlander, period. The term came about because of people from other states visiting the state on account of the ski resorts and the mountains.

"Those damn rich flatlanders come up here from freakin' California and buy up all our farmland and develop damn Walmarts all over the place."

"You're from Michigan? You're a damn flatlander."

"I'm a ridgerunner, not a flatlander."

by katelynrt February 23, 2006
 
6.
An unflattering name given by people in Wisconsin to residents of Illinois who travel to Wisconsin for weekend jaunts.
"Those damn flatlanders keep coming to our bars stealing all our cute chicks."
by Michael Coyle October 28, 2007
 
7.
a term used by vermonters (people from vermont usa) to describe people not from vermont. most of the time used as a insult.
the flat landers are takeing over vermont
by hilltop henry March 26, 2003