A person from a lower elevation in the state of Pennsylvania who delights in visiting (or worse - moving to) higher elevations and ruining the culture, typically in the northcentral part of the state.

Flatlanders think that they can move to the hills, have babies, and the babies are therefore not flatlanders. If a cat crawls into your oven and has a litter, are the offspring cookies?
Go back to Philadelphia, you fucking flatlander.
by Gladnottobeone April 1, 2004
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flatlander is a species of people who live in flatland. Talked about by Edwin Abbott Abbott in his book "flatland". It is a thought experiment about 2 dimensional beings, and their perceptions. A intro to the math subject topography.
A Square is a flatlander, he discovered lineland, and was once visited by A sphere, and was baffled by the 3rd dimension.
by clayton bigsby the fourth November 6, 2017
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a great way to use free time; performing a variety of bmx tricks on an area of flat land or open space of concrete; possibly the best way to ride on 2 wheels ever invented
dude i met this guy who could do some really kool flatland stuff like a decade, a steam turbine, and a cliffhanger.
by e-flo May 5, 2007
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a person who is so unaware of their surroundings they cannot even function in the world. These people are jokes in life and have no sense of style, coolness or anything of the sort.
Joe: Hey man do u wanna come over and read or something.

Kyle: Bro, are you kidding me, ur a complete flatlander
by tenth dimension March 23, 2009
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A term used by hicks in Vermont, Maine and New Hampshire to describe people who come from other states; usually a negative connotation used by hicks because they are envious that people from others states know how to make money and can't realize that you won't make cash worth a barrel of shit on a farm or a gas station out in the woods.
Flatlanders know how to live. Get a life, you damn hicks.
by idonthavaname September 23, 2006
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Area of flesh between a person's starfish and their front parts.
I pulled out and skeeted all over her flatlands
by Cal December 2, 2004
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