flat-earther 

One who believes in the theory of flat earths, perhaps as a result of having either a flat head or flat testicles.

Two flat-earther astronauts go into space.

"Look dude, we're orbiting a blue pancake!"
"Holy fuck! That's a funny ball-shaped pancake!"

flat-earther by masterblaster01 January 17, 2018

Flat-earther 

Flat-earthers are people who believe the earth isn't a geoid and believe it's flat because of some bs they watch on youtube

Flat-earther: Can't you see that If I kick a ball water doesn't stay on it
Average person: That ball doesn't have a gravitational force bruh.

Flat-earther by SkS_defines July 22, 2023

Flat Earther 

One who lacks the most important organ, a brain. One who believes that the Earth is Flat, and that space doesn't exist and is just a 'dome' around the Earth and everything is a lie told by the government.

Guy 1: How do u feel about Flat Earthers?

Guy 2: I feel that all Flat Earthers should be sent up in a rocket, and ejected into space, so their last sight will be a Spherical Earth in Space.

Flat Earther by Sur7 January 25, 2019

Flat Earther 

One who is mentally retarded in the head, was dropped as a child and snorts crushed up panadol.

All flat earthers are dickheads.

Flat Earther by FrogBoot May 5, 2018

Flat Earther 

Idiots

Guy1: That guys a flat earther.
Guy2: You mean a dumb ass

Flat Earther by Skin Ne Penis February 22, 2018

Flat Earther 

Someone who not only believes the Earth is flat, but will also claim any argument against their theory is government propaganda.

I hear Bob is a Flat Earther. We should send Bob up into space so he can get a harsh dose of reality.

Flat Earther by Gatch Attack July 22, 2017

Flat Earther 

Idiots who are mentally retarted and think this earth is a peice of paper

Flat Earthers are mentally retarted

Flat Earther by Eazy-E Jr. October 17, 2018