Flatarn 

A powerful smack with a flat hand to the cheek, holding a 45 degree angle from wrist. First used against human beings practicing incest.

She cheated on me with her brother so I gave her a good "flatarn".

Flatarn by Min jakke April 26, 2023

Flatard 

Someone who still beleives the world is flat, even the overwhelming evidence that says it's not won't sway them. Apparently it's a government conspiracy

"The world is flat , the govement is hiding this fact because they don't want us to know about the rich gold deposits outside the known map"

" no its a globe you flatard"

Flatard by Cwilson87 March 12, 2017

Flatard 

A dumbass retard who believes the world is flat. More like he is a flat head himself. Complete and utter idiots to tell in short.

Ricardo matos is a flatard

Flatard by Fire99 July 26, 2019

Flatard 

The mixture of flat and retarded.

My son is becoming a flatard

Flatard by Justin Goins January 16, 2019

Flatarnde

Fat, yet successful

Jonah Hill is a flatarnde actor.

Flatarnde people are rare because fat people are usually lazy and gross.

Flatarnde by JerBear53 May 26, 2015

Flatardia

Places Flatards congregate, IE. Flat earth groups on social media, Flat earth conferences, Mom's basement.

see flatard

That post is strait out of Flatardia.

Flatardia by Nathan Tampoon May 15, 2018

flatard 

Whenever your friend is acting like a complete, and utter idiot.

You are such a flatard for singing the pokemon theme song in a chimp monk voice.

flatard by turdmuffin#2 August 2, 2010